Question

A. What is the [H3O+] in a solution that contains 1.60 g of HNO3 in 0.490 L of solution? Express your answer with the appropriate units.

B. A 24.0 mL sample of vinegar, which is an aqueous solution of acetic acid, CH3COOH, requires 18.5 mL of a 0.700 M solution of NaOH to reach the endpoint in a titration: CH3COOH(aq)+NaOH(aq)→NaCH3COO(aq)+H2O(l) What is the molarity of the acetic acid solution? Express the concentration to three significant figures and include the appropriate units.

C. Indicate whether each of the following solutions is acidic, basic, or neutral: Sort these solutions into the proper categories. [H3O+]=6.0 x 10^-12 M, [H3O+]=1.4 x 10^-4 M, [OH-]=4.5 x 10^-2 M, [OH-]= 5.0 x 10^-12 M