A 0.495M solution of nitrous acid, HNO2, has a pH of 1.83 a) Find the percent ionization of nitrous acid in this solution. You may assume the temperature is 25 oC.

b) Calculate the value of Ka for nitrous acid. You may assume the temperature is 25 oC.

c) Using the value of Ka you determined in b), calculate the pH of a solution formed by adding 1.0 g of NaNO2 to 750 mL of 0.0125M HNO2. You may assume the temperature is 25 oC.

Which statement is true according to the kinetic theory? a. molecules of different gases with the same mass and temperature always have the same average density. b. molecules of different gases with the same mass and temperature always have the same average volume. c. molecules of different gases with the same mass and temperature always have the same pressure. d. molecules of different gases with the same mass and temperature always have the same molecular mass. e. molecules of different gases with the same mass and temperature always have the same average kinetic energy.