A.) if 18.1 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia?

B. ) Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide, H2O2H2O2, can be titrated against a solution of potassium permanganate, KMnO4KMnO4. The following equation represents the reaction:

2KMnO4(aq)+H2O2(aq)+3H2SO4(aq)3O2(g)+2MnSO4(aq)+K2SO4(aq)+4H2O(l)2KMnO4(aq)+H2O2(aq)+3H2SO4(aq)3O2(g)+2MnSO4(aq)+K2SO4(aq)+4H2O(l)

A certain amount of hydrogen peroxide was dissolved in 100. mLmL of water and then titrated with 1.68 M KMnO4KMnO4. What mass of H2O2H2O2 was dissolved if the titration required 20.8 mLmL of the KMnO4KMnO4 solution?

C.) How many grams of butanethiol can be deodorized by reaction with 4.00 mLmL of 9.6510² M NaOCl NaOCl?

Express the mass in grams to three significant digits.

D.) The reaction described in Part A required 3.48 LL of potassium chloride. What is the concentration of this potassium chloride solution?

Express your answer with the appropriate units.

E.) The forensic technician at a crime scene has just prepared a luminol stock solution by adding 19.0 gg of luminol into a total volume of 75.0 mLmL of H2OH2O.

What is the molarity of the stock solution of luminol?

F.) A student placed 17.0 gg of glucose (C6H12O6C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mLmL mark on the neck of the flask was reached. The flask was then shaken until the solution was uniform. A 50.0 mLmL sample of this glucose solution was diluted to 0.500 LL. How many grams of glucose are in 100. mLmL of the final solution?

Express your answer to three significant figures and include the appropriate units.

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