1) Which one of the following pairs cannot be mixed together to form a buffer solution?  

In general, as activation energy increases, reaction rate _______

Calculate the pH of a solution prepared by dissolving 0.150 mol of benzoic acid (C7H5COOH) and 0.300 mol of sodium benzoate (C7H5COONa)  in water sufficient to yield 1.00 L of solution. The Ka of benzoic acid is 6.30 × 10-5  

Which of the following reactions is a redox reaction?               (a) K2CrO4 + BaCl2 → BaCrO4 + 2KCl             (b) Pb22+ + 2Br- → PbBr             (c) Cu + S → CuS    

The product of the nuclear reaction in which 28Si is subjected to neutron capture followed by alpha emission is ________.  

Which of the following aqueous solutions has the lowest ?

Which reaction will shift to the left in response to a decrease in volume?  

The standard cell potential (E°cell) for the voltaic cell based on the reaction below is________ V. Sn2+ (aq) + 2Fe3+ (aq) → 2Fe2+ (aq) + Sn4+ (aq)    

Which element is oxidized in the reaction below?             I- + MnO4- + H+ → I2 + MnO2 + H2O    

The reaction    2NO2 → 2NO + O2  follows second-order kinetics. At 300 °C, drops from 0.0100 M to 0.00650 M in 100.0 s. The rate constant for the reaction is ________ M-1s-1.