Determine if the following statements regarding buffers are True of False? HF would be a good choice for a buffer with a desired pH of 6.75 HCN would be a good choice for a buffer with a desired pH of 9.50 HC2Cl3O2 would be a good choice for a buffer with a desired pH of 13.75 HIO would be a good choice for a buffer with a desired pH of 11.25

Which of the following statement(s) is/are correct (true) about a system at equilibrium            X3 (aq) + Z3 (aq) ⇌ 3 XZ (aq)                 K = 6.7 x 10-4 The concentration of the reactants is greater than the concentration of products. The rate of the forward reaction is less than the rate of the reverse reaction. Both the forward and the reverse reactions continue to occur once the system has reached equilibrium.

Use the reaction shown below and the given equilibrium concentrations to determine the value of K for the reaction at 37 oC eq = 2.3 M, eq = 1.1 M, eq = 0.90 M

What is the pH of a solution when 70.0 mL of 0.090 M HCl is added to 50.0 mL 0.550 M LiOH at 25OC?

Comment on the spontaneity of the reaction given:  ΔH = 301.8 kJ and  ΔS = 267.5 J/K The reaction will be spontaneous

Which of the following statement(s) is/are correct (true) about a system at equilibrium              X3 (aq) + Z3 (aq) ⇌ 3 XZ (aq)                 K = 1.8 x 103 The rate of the forward reaction is equal to the rate of the reverse reaction. Both the forward and the reverse reactions stop once the system has reached equilibrium. The concentration of the products is greater than the concentration of reactants.

For the following reaction which of the following statements is/are correct:

Identify the Lewis base in the reaction below.

Identify the Lewis base in the reaction below. 

During the current year, Acme Company reports sales of $2,842,000 and net income of $313,600. Acme’s total asset turnover is 1.45 and its debt-to-equity ratio is 0.75. What is the return on equity?