A chemist starts her experiments with 25.00 mL of 0.125 mol L-1 NaCN solution. The pKa of HCN = 9.20. a) What volume of 0.100 mol L-1 HCl will be required to fully react with the above salt? b) After the reaction in part (a) takes place, will the pH of the solution be acidic, basic or neutral? c) What volume of 0.100 mol L-1 HCl is needed to adjust the pH of the originally provided solution to pH = 9.00? HINT: At pH 9.00, what kind of solution is created if the pKa of HCN is 9.20

Q: Given pieces of Zn and Al, and amounts of ZnSO4 and Al(SO4)3 solutions, what combinations of these…

A: As we need to illustrate that Zn is less reactive than Al, so we need to prove that Zn don't react…

Q: How is lactase enzyme activity influenced by increasing ONPG concentration?

A: Enzyme activity increased at a slower rate under this condition than in the glycerol control, but…

Q: Question 3 The biological systems of various marine life forms may be affected by the pH of the sea…

A: We are given the speciation diagram of H2CO3 that gives information about the fraction of each…

Q: An aqueous solution known as Ringer's lactate is administered intravenously to trauma victims…

A: Given, Molarity of sodium lactate (NaC3H5O3) solution = 5.00 mM = 0.005 M = 0.005 mol/L Volume of…

Q: Mg + O2 ------> MgO Na2CO3 -------> Na2O + CO2 C3H8 + O2 -------> CO2 + H20

A: As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost other…

Q: What is the density of a solid having a mass of 10.0421g measured using analytical balance and a…

A:

Q: equilibrium? 2. A 1.00 mol sample of NOCI was placed in a 2.00 L reactor and heated to 227°C until…

A:

Q: A sample of carbon dioxoide gas has a pressure of 8.79 bar8.79 bar and a volume of 10.7 mL10.7 mL at…

A:

Q: Describe the preparation of a. 2.00 L of 0.120 M HCIO4 from the commercial reagent [60% HCIO4 (w/w),…

A:

Q: If zinc is less reactive than magnesium chloride, what is the equation that occurs when zinc is…

A: Given :-  Zn is less reactive than MgCl2  To determine:-  Equation of Zn with MgCl2

Q: Provide the suitable reagent / reaction conditions for the following chemical transformation: 1) 2)…

A:

Q: Which of the following is the balanced half -reaction for the oxidation of Cu to Cu+2? Select one:…

A: Oxidation :-  The process of loss of electrons or increase in oxidation number is known as oxidation…

Q: PROCESS/PROCEDURE: Answer the questions below in relation to the following generic phase diagram.…

A: A question based on phase diagram that is to be accomplished.

Q: The decomposition of NO2(g) : 2NO2(g) ----->2NO(g) +O(g) is a second order reaction and the rate…

A:

Q: Assuming a Dzd symmetric transition metal molecule and assign the d-orbitals to the corresponding…

A:

Q: A certain radioactive nuclide has a half life of 7.00 hour(s). Calculate the rate constant for this…

A:

Q: POST-LABORATORY QUESTIONS Due after Laboratory Experiment 1. While performing the Dumas experiment,…

A: ¶1):-> Step 1 Dumas experiment is used to determine the molecular weight of a substance which are…

Q: Q4. Prednisolone is to be eluted from a silica gel column. List the following system in order of…

A: The order of elution of prednisolone is needed to be predict in different mixture of solvent given.

Q: 4. Propose an arrow-pushing mechanism for the following reaction: OH HBr Br CH;OH + H,0

A:

Q: ionic compound

A:

Q: Conjugated cyanine dyes are commonly used to label proteins and nucleic acid for spectroscopic…

A: We have find out correct statement.

Q: a. Ru-106 decays by beta decay. What are the atomic symbol and mass number of the product? Product:…

A: Answer of the question given below,

Q: Many operations in the chemical laboratory use “salting out” in the procedure. What do the purpose…

A: We have find out the purpose of salting out technique in the chemical laboratory.

Q: At 1.25 atm and 685 K, what volume of CO2 gas forms from the combustion of 34.28 g of C4H10? 2…

A: Given- Pressure=1.25atm  Weight of C4H10=34.28g Temperature=685K Volume?

Q: Draw the major organic product X for the below reaction. H, но, H + Brz x + HBr +

A:

Q: 12.) Which of the following is NOT true for the kinetic molecular theory A.) The volume occupied by…

A: *  Kinetic energy of gas molecules  is related to       the  motion of molecules  . * Greater the…

Q: The maximum theoretical mass of product in a certain reaction is 20.0g, but only 15g is actually…

A:

Q: Determine the pH of a 500mL aqueous solution with 0.12 mol B and 0.10 mol BH+, according to the…

A: moles of B = 0.12 moles of BH+ = 0.10 M

Q: Draw the Lewis structures for the following molecules. For each molecule, determine its (a)…

A:

Q: Consider these compounds: A. PbCl2 В. NI(OH)2 C. NICO3 D. PbSO4 Complete the following statements by…

A: We would use Ksp value of all compounds to predict the relation between solubility.  Compound which…

Q: Trypsin is active in Acidic Alkaline Nutral All of above the term apoenzyme is applicable to simple…

A:

Q: The half life of a certain substance is 5.6 days. How long will it take for 100 g of the substance…

A: Radioactive decay follows the first-order kinetics. The decay constant (λ) and half-life of a…

Q: How many moles of an ideal gas occupy 12.5L at 298K and 1.00atm (1.01bar) pressure?

A:

Q: A certain amount of glucose (C6H1206) reacted through a combustion reaction using sufficient amount…

A: First we would write a balanced chemical equation for combustion of glucose.  Then using given…

Q: A chemist wishing to do an experiment requiring 4"Ca2+ (half-life = 4.5 days) needs 8.0 µg of the…

A:

Q: Identify the intermolecular forces present in the following substances. 3) Methyl alcohol, CH3OH

A: The types of intermolecular forces present in Methyl alcohol is given below

Q: MOLECULAR GEOMETRY AND POLARITY OF ONF WITH N AS CENTRAL ATOM

A: To determine molecular geometry of ONF , we would use valance electrons of all atoms and make…

Q: H3C, (а) Br F. and Br CH3 CH3 H3C H H. (b) F and "Br Br CH H. Br Br CH3 (c) and H3C"/ `H CH3 F Br…

A:

Q: 2. A voltaic cell is constructed by immersing a strip of copper metal in 1.0 M CuSO, solution and a…

A: 2.) We would use the given information to predict about copper electrode.      Note : As you have…

Q: mass of solute

A:

Q: Even though you used different amounts of NaSCN for each test mixture the values of Kc you measured…

A: Equilibrium constant (Kc) for this reaction :…

Q: 9. For each set of reactants, write a redox equation for the reaction that may occur. Calculate the…

A: In a redox reaction, both the oxidation and reduction reactions take place simultaneously. For a…

Q: , Bi-214 undergoes B decay. W

A:

Q: E. BRCN (C in center) 2. A. CO2 B. NO: C. NH;CI D. SO, Best Lewis Structure (show all electrons and…

A: We have find out Best Lewis Structure  e geometry Approx. Bond angles Polar or non-polar  Total lone…

Q: y grams of O,

A:

Q: In comparing 1 mole of carbon atoms to one mole of magnesium atoms, which statement is TRUE?…

A:

Q: What is the balanced equation for each of the following processes? 1)Cu produces a positron. 2) Sb…

A: Answer of the question given below,

Q: Which statement is true regarding drugs given intramuscularly? A. The drug goes directly to the…

A: Drugs can be given different ways-  1- orally it can be given 2- it can be given intramuscularly…

Q: The emulsifying agent, a salt, is prepared from 2 chemicals. A) write the structure of stearic acid…

A:

Q: A certain radioactive nuclide has a half life of 1.00 hour(s). Calculate the rate constant for this…

A:

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.