Blog

The acid-dissociation constant of hydrocyanic acid (HCN) at 25.0°C is 4.9 × 10-10. What is the pH of an aqueous solution of 0.040 M sodium cyanide (NaCN)?

You dissolve 0.120 g of the protein in water to make 20.00 mL of solution, and the osmotic pressure is 0.004644 atm at 298 K. What is the molar mass?

What is the equilibrium expression for the following reaction?

Place the following in order of decreasing molar entropy at 298 K. H2 Cl2 F2

What is the equilibrium expression for the following reaction?

What is the equilibrium expression for the following reaction?

Given the following data, determine the order of the reaction with respect to NO(g). Experiment [NO] (M) [Cl2] (M) Rate (M/s) 1 0.0300 0.0100 3.4 × 10−4 2 0.0150 0.0100 8.5 × 10−5 3 0.0150 0.0400 3.4 × 10−4

Consider the following reaction at equilibrium. What effect will removing H2O have on the system? 2 H2S(g) + 3 O2(g) ⇌ 2 H2O(g) + 2 SO2(g)

Consider the following reaction at equilibrium. What effect will removing H2O have on the system? 2 H2S(g) + 3 O2(g) ⇌ 2 H2O(g) + 2 SO2(g)

Given the following data, determine the order of the reaction with respect to NO(g). Experiment [NO] (M) [Cl2] (M) Rate (M/s) 1 0.0300 0.0100 3.4 × 10−4 2 0.0150 0.0100 8.5 × 10−5 3 0.0150 0.0400 3.4 × 10−4