Author: Anonymous

What is the change in Gibbs energy of a reaction at 295 K, if ΔH = 150 kJ/mol and ΔS = 85.0 J/mol*KGiven the equation: ΔG = ΔH – TΔS

Which description best fits the titration curve below?

The molar solubility of PbCO3 is 2.8 x 10-7 mol/L, what is the solubility of PbCO3 in g/L?The molar mass of PbCO3 = 267.2 g/mol

Consider the following reaction at equilibrium: N2O4 (g) ↔ 2NO2 (g). What is the equilibrium constant in concentration (Kc) of the forward reaction if the concentration of N2O4 is 0.124 M and the concentration of NO2 is 0.0258 M?

What is the pH of a 0.0400 M solution of HNO3? HNO3 is a strong acid.

Consider the following dissociation: Cu(OH)2(s) ↔ Cu2+(aq) + 2OH-(aq). What would be the equilibrium expression for the forward reaction?

What is the oxidation number of chromium in chromate, CrO42-

A galvanic cell was constructed using Zn/Zn2+ and Cu/Cu2+. Given the standard reduction potentials for Zn and Cu, which metal would be the anode?Cu2+ + 2e- –> Cu             = 0.34VZn2+ + 2e- –> Zn             = -0.76V

A solution has a concentration of [H+] = 1.0 x 10-9 Which of the following is true of this solution?

Suppose that for a reaction the equilibrium constant was found to be 4.17 x 10-5. Which of the following best describes the concentration of products at equilibrium of this reaction?