What is the pH of a 1.000 M HNO3 solution?

Which of these makes the best buffer?

Determine the vapor pressure of a solution at 25°C that contains 85.3 g of naphthalene (128.1705 g/mol) in 540 g of benzene (78.11 g/mol). The vapor pressure of benzene at 25°C is 74.6 torr.

Which one of the following has the highest standard molar entropy, S°, at 25°C?

Calculate the pH of a 1.60 M NaCH3CO2 solution. Ka for acetic acid, CH3CO2H, is 1.8 × 10-5.

Calculate the pH of a 0.800 M CH3NH3Cl solution. Kb for methylamine, CH3NH2, is 3.7 × 10-4.

Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25°C. Cu(s) + Mg2+(aq) → Mg(s) + Cu2+(aq) Mg2+(aq) + 2 e⁻ → Mg(s) E° = -2.38 V Cu2+(aq) + 2 e⁻ → Cu(s) E° = +0.34 V

Which is the strongest acid?  

Consider the following reaction at equilibrium. What effect will decreasing the temperature have on the system?

Which pair of substances is capable of forming a buffer in aqueous solution?