A buffer solution contains 0.384 M KHCO3 and 0.239 M Na₂CO3. If 0.0464 moles of potassium hydroxide are added to 225.0 mL of this buffer, determine the pH of the resulting solution. Assume that the volume does not change upon adding potassium hydroxide. Given Ka of HCO3 = Ka2 of H₂CO3 = 4.7 x 10-11

Q: O₂N CH3 O 1. Br. CH3 CH3 FeBr 3 2. NBS, peroxide, heat ?

A:

Q: A balloon is sealed with 1.00 mol argon in a laboratory. The laboratory workspace is at sea level…

A: At sea level, atmospheric pressure is equal to 1 atm and room temperature is equal to 298 k. Argon…

Q: Answer 39. Round off each of the following numbers to the indicated number of significant digits and…

A:

Q: 1, Br₂, Fe Brz 2. Li 3. Cu I er Cl₂, FeCl Ph₂CuLi

A: In this question, we will write the reaction mechanism for the reaction.  You can see below in the…

Q: Assign an oxidation state to each atom CF4

A:

Q: In the laboratory a student combines 49.5 mL of a 0.437 M nickel(II) fluoride solution with 16.1 mL…

A:

Q: Write the RHR, OH, and the balanced overall reaction of the voltaic cell.

A: Electrochemical cell is a device that converts chemical energy to electrical energy. It is driven by…

Q: Question 15 Which of the following techniques measures spectra following excitation with…

A: The given techniques are XRF,µXRF,µCT scans,CµXRF.

Q: II. Identify the oxidizing agent and reducing agent in each reaction. 2H2 + O2 → 2H₂O 1. 2. Zn+S →…

A:

Q: Question 1 Which of the following statements below is NOT TRUE about silver nitrate. O It can be…

A:

Q: Consider the expression: ds = dT - VadP. Suppose that water has ß = 4.53x10-5 atm-¹, V = 18 cm³…

A: Given dS=dT - VαdP  ß = 4.53x10-5 atm-1 V = 18 cm³ /mol Cp, 18 cal/deg.mol   α = 2.0 x10-4deg-1

Q: Modify the molecule to show the products formed by the hydrolysis of the following triacylglycerol.…

A: Hydrolysis of triacylglycerol gives carboxylic acid and glycerol.

Q: Which of the following is based on the emission of a second electron after high energy radiation has…

A: It is asked to mention on the basis of which effect a second electron emission after high energy…

Q: О Thrana 99 О CI О ОН ОН о

A: The compound can be indentified by the  1H NMR and  13C NMR spectrum .

Q: II. Find the Empirical and Molecular formulas given the percent composition or masses of:.0 go A.…

A: Dear student , since you have posted multiple questions we are allowed  to solve only first question…

Q: Consider an electrochemical cell where the following reaction takes place: 2Au3+ (aq) + 3 Zn(s) →→→…

A:

Q: Why is it necessary to run a blank before measuring the absorbance of a sample?       To allow…

A: Why is it necessary to run a blank before measuring the absorbance of a sample? = To account for the…

Q: Phosgene (COCL) is a toxic substance that forms readily from carbon monoxide and chlorine elevated…

A:

Q: Volhard method is supported by the following statements EXCEPT_ Choose the best answer. Titration…

A: The given statements are  1-Titration can be done even at a pH lower than 6.5 2-The endpoint of the…

Q: Suppose a sample of refrigerant gas consisting of a simple mixture of the gases pentafluoroethane…

A: In this question we will first find out the average molecular mass, given the density(d),…

Q: A potentiometric titration of a 0.278 g sample of FeSO4.7H₂O salt, in acidic medium, with a 0.011 M…

A: Solution - According to the question - Given -  Given graph the equivalence point is observed at 15…

Q: Which of the following refers to the irreversible aggregation of colloidal particles? lyophilic…

A: When small amount of electrolyte is added to the sols which readily precipitates and do not give…

Q: Calculate ArxnG for the following reaction at 375 K. Assume that ArxnH is constant over the…

A:

Q: Specify the hybridization at the atoms labelled a-d. For each atom enter one of the following: sp3,…

A: a= SP hybridized . b= SP hybridized. c= Sp3 hybridized( their is two sigma bond and two lone pair)…

Q: Question 1 Match the following type of electromagnetic radiation to their corresponding wavelength…

A: Electromagnetic radiations can be defined as the radiation that consist of both electric andd…

Q: Hydrogen gas is produced by the reaction between metallic aluminum and aqueous hydrochloric acid. 2…

A:

Q: How many grams of Mg3(PO4)2 can be produced when 82.0 mL of 3.5 M MgCl2 reacts with excess sodium…

A:

Q: Consider this modified equation of state: as Evaluate the term () for the equation. P = nRT V-nb a…

A: Here we are required the given term for the equation

Q: Question 28 Match the following redox titration methods to their corresponding titrants. ✓ KMnO4…

A: Titration is the process in which concentration of a compound is determined in a solution of unknown…

Q: For the given reaction, what volume of NO₂ can be produced from 0.80 L of O₂, assuming an excess of…

A:

Q: Unshared, or lone, electron pairs play an important role in determining the chemical and physical…

A:

Q: Which of the following factors increases the rate of adsorption? low concentration…

A:

Q: Find the pH and %l of 0.100 M ammonium chloride. + NH₁ + H₂O = NH3 + H₂O+ Ka-Kw/Kb NH, Kb = 1.75 x…

A: Given,  Molarity of ammonium chloride is 0.100 M The pH of the solution is:

Q: the following densities, which substance w Density 0.30-0.85 g/mL oal 0.57 g/mL num 2.7 g/mL C 0.91…

A: The substance which have density less than water will float in water.

Q: Phosgene (COCL) is a toxic substance that forms readily from carbon monoxide and chlorine at…

A: Here we are required to find the equilibrium concentration of each species

Q: Question 3 Why is it necessary to run a blank before measuring the absorbance of a sample? O To…

A: Why is it necessary to run a blank before measuring the absorbance of a sample ? The reason is given…

Q: - Propose structures for either a nitrile or an amide that might be a precursor of each of the…

A: We have to propose the structure of either a nitrile or an amide that must be the precursor of the…

Q: Which metal group has the highest chemisorption activity? 6 07 09

A: To determine the highest chemisorption activity of groups given.

Q: When a metal is heated its density decreases. There are two sources that give rise to this…

A: The answer is attached below-:

Q: Consider the cyclohexane framework in a chair conformation, where carbon 1 has two substituents, X…

A:

Q: Give the systematic name of the compound. OH H3C. CH3 CH₂ OH The name of the compound is

A: The given compound is:

Q: A2 ____ forms complex with EDTA ____ requires a second titrant for back-titration a. none…

A: Given:- ____ forms complex with EDTA____ requires a second titrant for back-titration a. none of the…

Q: Write the balanced equation of the reaction between Al and oxygen in the presence of heat.   4.…

A: In the given question we have to write the balance equation of the following reaction.  3. Aluminium…

Q: Determination of the concentration of HCl: Pipette 10 mL of hydrochloric acid and transfer to a 100…

A: Acid-base titration refers to titration reaction in which either of titrant or titrate is a base and…

Q: Question 5 Match the following titration methods to their corresponding end points. Fajan's…

A:

Q: There are two oxides of an element X, the first contains 50% oxygen and the second contains 60%…

A: The atomic mass is calculated on the basis of a relative scale and if you talk about the mass of…

Q: At a certain temperature the rate of this reaction is first order in H₂CO3 with a rate constant of…

A:

Q: estion 4 Which of the following is based on the emission of a second electron after high energy…

A: Metals can be defined as the substances that are good conductors of electricity and are…

Q: A 0.1220 g vitamin C tablet was dissolved in acid. This required 11.50 mL of 0.01740 M KIO3 to reach…

A: Here we are required to calculate percent by weight of ascorbic acid in the tablet.

Q: Which compound will most likely be formed when lithium(Li) and nitrogen(n) are chemically combined

A: Electronic configuration:  Li : 1s22s1  N : 1s22s22p3

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.