What is the pH of a solution that contains 0.23 M HC2H3O2 and 0.10 M C2H3O2-? Use Kb = 5.6 x 10-10 for C2H3O2-.

For the reaction c6h14(g) & longrightarrow; c6h6(g) + 4h2(g), δp(h2)/δt was found to be 2.5 x 10-2 atm/s, where δp(h2) is the change in pressure of hydrogen. determine δp(c6h14)/δt for this reaction at the same time.