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Which of the following is a Lewis base?

Calculate the pOH of a solution that contains 7.8 × 10-6 M OH⁻ at 25°C.

Calculate the pH of a solution that is 0.111 M in sodium formate (NaHCO2) and in formic acid (HCO2H). The Ka of formic acid is 1.77 × 10-4.

Calculate the pH of a solution that is 1.58 M HClO and 0.099 M NaClO. The Ka for HClO is 2.9 × 10-8.

When titrating a monoprotic strong acid with a weak base at 25°C, the

Which of the following salts is the most soluble in water? i) PbF2, Ksp = 3.3 x 10-8 ii) Pb(OH)2, Ksp = 1.4 x 10-20 iii) PbI2, Ksp = 9.8 x 10-9 iv) Pb(IO3)2, Ksp = 3.7 x 10-14

Calculate the molarity of hydroxide ion in an aqueous solution that has a pOH of 3.24.

Which of the following salts is the least soluble in water? i) AgBr, Ksp = 5.4 x 10-13 ii) AgCl, Ksp = 1.8 x 10-10 iii) AgSCN, Ksp = 1 x 10-12 iv) AgI, Ksp = 8.5 x 10-17

Which of the following is a Brønsted-Lowry base?

Which is the conjugate acid of HSO4⁻? i) H2S ii) H2SO3 iii) H2SO4 iv) SO32-