1.) A 50 ml solution of H2So4 is titrated with 0.070 MKOH. The second equivalence point is reached when 35.5 ml ofbase is added to the acid. What is the molarity of the acid? Show work please.

2.) At 700 C, Kc = 9.30 x 10^-8 for the reaction
2H2S(g) <- -> 2H2(g) + S2
And 0.0020 moles of each component are added to a 1.0 Lflask. Which of the following statements is true ? Showwork please.

a.) the reaction is at equilibrium

b.) the reaction is not at equilibrium and in achievingequilibrium, more reactant is created.

c.) the reaction is not at equilibrium and in achievingequilibrium, more products are created.

3.) The reaction between H2(g) and I2(g) produces HI(g). In a 2.00 L container, 1.00 mole of H2 (g) and 2.00 mole of I2 (g)are mixed. The concentration of HI(g) is 0.78 M after thesystem reaches equilibrium. Calculate the equilibriumconstant. Show work please.

4.) What is the pH of a buffer solution obtained by mixing20 ml of 0.02 M NH3 and 30 ml of 0.02 M NH4+? (Ka for NH4+ is5.68 x 10^-10.)

5.) Which insoluble compound in the pair should be more solublein nitric acid than in pure water? Explain whyplease.
AgI (Ksp = 8.5 x 10^-17) or Ag2C03 (Ksp + 8.5 x 10^12)

6.) What is the pH of a 2.0 M HCl solution? Show workplease