Answered: What quantity in moles of CHINH CI need…

What quantity in moles of CHINH CI need to be added to 200.0 mL of a 0.500 M solution of CH3NH: (Kb for CHINH₂ is 4.4 x 10) to make a buffer with a pH of 11.05?

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter15: Complex Acid/base Systems

Section: Chapter Questions

Problem 15.19QAP

See similar textbooks

Related questions

Q: Based on a grade 11 chemistry student, answer the following question:

A: The objective of the question is to determine the volume of gas produced and the mass of excess…

Q: S (rhombic) + O2 (g) ®SO2 (g) DrH\deg = -294.1kJ S (monoclinic) + O2 (g) ⓇSO 2 (g) DrH\deg =…

A: Given thermochemical equations are 1)S(rhombic)+ O2 (g) --> SO2 (g) ; ΔH°…

Q: Draw the skeletal structure of [CH3CH2CH2CH20] -

A: The line-angle formula or skeletal formula of an organic compound is a type of molecular structural…

Q: 5. Both technetium-99 and thallium-201 are used to image heart muscle in patients with suspected…

A: Given,Determine the percent of radioactivity.Radioactive decay, also known as nuclear decay or…

Q: The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the…

A: IsotopeAbundanceMass 221X74.22220.9220X12.78220.0218X13.00 218.1

Q: A certain substance has a heat of vaporization of 61.92 kj/mol. At what Kelvin temperature will the…

A: Answer:-This question is answered by using the simple concept of calculation of temperature using…

Q: Recognizing the intersection of scientific properties and ideas with the world around you is a key…

A: The objective of this question is to choose a favorite element from the periodic table, describe its…

Q: A sodium vapor street lamp emits yellow light at wavelength λ = 589 nm. How much energy is released…

A: The objective of this question is to calculate the energy released per mole of sodium atoms when a…

Q: Additional Questions: 10. Draw the starting reagents used to prepare the following aldol products.…

A: These class of reactions start with abstraction of hydrogen from alpha position. Final product is…

Q: OH OH

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: What should go in place of X? A) As B) Se C) Os D) O Y 76 Z

Q: The pK value of crotonic acid is 4.7. If the H3O+ and crotonate ion concentrations are each 0.0030 a…

A: pKa = 4.7Crotonate ion concentration= 0.003MTo find undisaociated acid concentration.

Q: Naturally occurring silver consists of two isotopes: 107Ag (51.84%) with an isotopic mass of…

A: Given:The two isotopes of silver are 107Ag and 109AgIsotopes Natural abundance…

Q: 7. An aqueous NaCl solution is made using 112 g of NaCl diluted to a total solution volume of 1.00…

A: The mass of NaCl is 112 g.The volume of the solution is 1.00 L = 1000 mL.The density of the solution…

Q: Hydrogen peroxide comes from the manufacturer at a concentration of 30% (w/v). Describe how you…

A: To dilute hydrogen peroxide, you will need to use the following information:The molar mass of H₂O₂…

Q: (c) (1) (ii) (iii) Draw the d-electron configuration of Ni(II) in an octahedral geometry. Draw the…

A: To solve this question we should the basics of coordination chemistry. We have given the Ni(II) ion,…

Q: What is the ratio of hydrogen atoms (H) to oxygen atoms (O) in 2 L of water?

A: The objective of the question is to find the ratio of hydrogen atoms to oxygen atoms in 2 liters of…

Q: A reaction is performed to study the reaction of nitrogen dioxide with fluorine: 2 NO₂+ F22 NO₂F The…

A: Rate law is an expression which relates rate of reaction, Rate constant and concentration of…

Q: What is the purpose of the EAS: lodination of salicylamide experiment? Select all that apply. Select…

A: EAS or Electrophilic Aromatic substitution: In this type of reaction an electrophile replaces a…

Q: The 3d sublevel contains how many orbitals? O one three seven five

A: Principal quantum number (n), indicates shell or orbit.Azimuthal quantum number (l), indicates…

Q: The activation energy for the gas phase decomposition of 2-bromopropane is 212 kJ. CH3 CHBRCH3 CH3…

A: From given data we can calculate the rate constant by using following formulahere Activation energy…

Q: The electrons and atoms are drawn in the right places in this Lewis structure, but the formal…

A: A formal charge (FC) is the charge assigned to an atom in a molecule, assuming that electrons in all…

Q: Fill in the name and empirical formula of each ionic compound that could be formed from the ions in…

A: to fill name and empirical formula of each given ionic compound that could formed from given ions

Q: What is the percent yield of water when you have 3.8 g H₂O produced from the reaction of 9.0 g CH3OH…

A: The mass of water that produced= 3.8 gThe mass of methanol reacts = 9.0 gThe mass of oxygen reacted…

Q: Express Surgery Center's (ESC) preferred stock, which has a par value equal to $160 per share, pays…

A: To determine the market value of Express Surgery Center's (ESC) preferred stock, we use the Dividend…

Q: Which of the following is the correct IUPAC name for the following line structure? Ignore…

A: Number the given compound in such a way that the substituent gets minimum priority. This can be done…

Q: What is the chemical symbol for potassium OK O Po OP O Pt O Au

Q: 3.2. What is the expression for the rate of appearance of NO based upon the following reaction? 2…

A: The objective of the question is to find the rate of appearance of NO in the given reaction and to…

Q: Determine the major product(s) of the following reaction. CH3 acetophenone [1] (S)-CBS reagent [2]…

A: Corey–Bakshi–Shibata (CBS) reduction, reduces a ketone to an enantioselective alcohol.

Q: Assuming 100% dissociation, calculate the freezing point (T) and boiling point (T) of 1.28 m Na₂SO4…

Q: what element has the largest atomic radius in period 2

A: Periodic table is the arrangement of elements in columns and rows. We have been asked the element…

Q: Calculate the pH of a solution prepared by adding 25 mL of 0.10 M sodium hydroxide to 30 mL of 0.20…

A: Acetic acid is a weak acid & NaOH is a strong base, pH of the solution depends upon whether…

Q: The boiling point of ethanol, CH3 CH₂OH, is 78.500 °C at 1 atmosphere. Kb (ethanol) = 1.22 °C/m In a…

A: The colligative properties are those properties of solutions that depend on the number of solute…

Q: The average micro-nano plastic concentration in bottled water was about 2.4×10^5 particles per liter…

A: The objective of this question is to estimate the mass of nanoparticles ingested if someone drinks…

Q: CI CI Cl₂C OH

Q: H₂O is soluble in CH3OH. In CH3CH₂OH, this solute would be: A) More soluble B) Less soluble C)…

A: Answer:-the solubility of alcohol depends on the number of carbon atoms as the number of carbon…

Q: CH3CHBRCH3 CH3 CH=CH₂ + HBr the rate constant in 8¹ has been determined at several temperatures.…

A: A question based on reaction rates. Using the given data and the relevant equation, rate constant of…

Q: How many cis/trans isomers does this molecule have? Enter the number in the box above the drawing…

A: Cis isomer or Z isomer contains the same group of atoms on the same side of a bond of restricted…

Q: In the titration of 40.0 mL of 0.400 M HCOOH with 0.150 M LiOH, how many mL of LiOH are required to…

A: The objective of this question is to determine the volume of 0.150 M LiOH required to reach the…

Q: What is the monomer used to synthesize the polymer O O

A: To find out monomer of the given polymer

Q: Provide an IUPAC name for the structure shown. wireframe + + labels (Use cis/trans terms for cyclic…

A: In the given question we have to write the IUPAC name of the compound.The organic compounds are…

Q: Interconvert K and Kvalues. Calculate Kp for the following reactions at the indicated temperature.…

A: To solve this question we should have knowledge of chemical equilibrium.Since you have asked…

Q: Which condensed structure below corresponds to the structure given here? ey…

A: Condensed structural formula is a way where we can write the the organic compounds formula in a…

Q: Which of the following compounds would you expect to have the greatest density:…

A: Density is defined as mass per unit volume of a substance. It is an intensive property which depends…

Q: Propane has a normal boiling point of -42.0° C and a heat of vaporization (AHvap) of 19.04 kJ/mol.…

Q: An organic liquid is either methyl alcohol (CH3OH), ethyl alcohol (CH3CH2OH) o a mixture of the two.…

A: The combustion reaction of methyl alcohol and ethyl alcohol:

Q: Draw the Lewis dot structures, line bond structures, and condensed structures, (determine bond…

A: First calculate double bond equivalent (DBE) of the chemical formula. It will help to understand the…

Q: The fifth ionization energy of O is 18.2 × 10–18 J.What is the maximum wavelength of radiation that…

A: The objective of the question is to find the maximum wavelength of radiation that will remove the…

Q: Use the Chemical Appendix at the back of the Lab Manual to determine the precautions that must be…

A: In laboratory we use different chemicals but to use all these chemicals we have to take care of…

Q: The radius of chromium is 125 pm and the density is 7.14 g/cm³. Does elemental chromium have a…

Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

What quantity in moles of CHINH CI need to be added to 200.0 mL of
a 0.500 M solution of CH3NH: (Kb for CHINH₂ is 4.4 x 10) to make a
buffer with a pH of 11.05?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Introduce the given data:

VIEW

Step 2: Find the moles of CH3NH2 :

VIEW

Step 3: Find the pKb and pOH :

VIEW

Step 4: Find the moles of CH3NH3Cl :

VIEW

Solution

VIEW

Step by step

Solved in 5 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Benzoic acid (K a=6.6105)is present in many berries. Calculate the pH and % ionization of a 726-mL solution that contains 0.288 mol of benzoic acid.
A buffer is prepared in which the ratio [ H2PO4 ]/[ HPO42 ]is 3.0. (a) What is the pH of this buffer? (b) Enough strong acid is added to convert 15% of HPO42- to H2PO4-. What is the pH of the resulting solution? (c) Enough strong base is added to make the pH 7.00. What is the ratio of [H2PO4-] to [HPO42-] at this point?
. Which component of a buffered solution is capable of combining with an added strong acid? Using your example from Exercise 60, show how this component would react with added HC1.
A buffer solution is prepared from equal volumes of 0.200 M acetic acid and 0.600 M sodium acetate. Use 1.80105 as Ka for acetic acid. (a) What is the pH of the solution? (b) Is the solution acidic or basic? (c) What is the pH of a solution that results when 3.00 mL of 0.034 M HCl is added to 0.200 L of the original buffer?
. How is the strength of an acid related to the fact that a competition for protons exists in aqueous solution between water molecules and the anion of the acid?
You have a solution of the weak acid HA and add some of the salt NaA to it. What are the major species in the solution? What do you need to know to calculate the pH of the solution, and how would you use this information? How does the pH of the solution of just the HA compare with that of the final mixture? Explain.
Consider an aqueous solution of HF. The molar heat of formation for aqueous HF is -320.1 kJ/mol. (a) What is the pH of a 0.100 M solution of HF at 100C? (b) Compare with the pH of a 0.100 M solution of HF at 25C.
Sketch the titration curve for a weak acid titrated by a strong base. When performing calculations concerning weak acidstrong base titrations, the general two-slep procedure is to solve a stoichiometry problem first, then to solve an equilibrium problem to determine the pH. What reaction takes place in the stoichiometry part of the problem? What is assumed about this reaction? At the various points in your titration curve, list the major species present after the strong base (NaOH, for example) reacts to completion with the weak acid, HA. What equilibrium problem would you solve at the various points in your titration curve to calculate the pH? Why is pH 7.0 at the equivalence point of a weak acid-strong base titration? Does the pH at the halfway point to equivalence have to be less than 7.0? What does the pH at the halfway point equal? Compare and contrast the titration curves for a strong acidstrong base titration and a weak acidstrong base titration.
Define a buffer solution. What makes up a buffer solution? How do buffers absorb added H+ or OH with little pH change? Is it necessary that the concentrations of the weak acid and the weak base in a buffered solution be equal? Explain. What is the pH of a buffer when the weak acid and conjugate base concentrations are equal? A buffer generally contains a weak acid and its weak conjugate base, or a weak base and its weak conjugate acid, in water. You can solve for the pH by setting up the equilibrium problem using the K.a reaction of the weak acid or the Kb reaction of the conjugate base. Both reactions give the same answer for the pH of the solution. Explain. A third method that can be used to solve for the pH of a buffet solution is the HendersonHasselbalch equation. What is the HendersonHasselbalch equation? What assumptions are made when using this equation?
Calculate the pH of a buffer solution prepared from 0.155 mol of phosphoric acid, 0.250 mole of KH2PO4, and enough water to make 0.500 L of solution.
A student prepares 455 mL of a KOH solution, but neglects to write down the mass of KOH added. His TA suggests that he take the pH of the solution. The pH is 13.33. How many grams of KOH were added?
A diprotic acid, H2B(MM=126g/moL), is determined to be a hydrate, H2B xH2O. A 10.00-g sample of this hydrate is dissolved in enough water to make 150.0 mL of solution. Twenty-five milliliters of this solution requires 48.5 mL of 0.425 M NaOH to reach the equivalence point. What is x?