PTS Chemistry Chemical Equilibrium Mcqs Online Test 5

Sodium benzoate and benzoic acid are mixed in equimolar ration to form buffer if pKa is 2 what will be the pH?

  pH of an aqueous solution is 5.5. The hydroxyl ion conc. In the solution would be ?

The pH of 10-3 mol dm-3 of an aqueous solution of H2SO4 is? 

Which of the following will not change the concentration of ammonia at the equilibrium ?

If a buffer solution of higher pH than seven is to be made we use?

Which of following is not a base? 

AgCl dissolved with conc (2x10-2) Ksp will be?

For a reaction involving only gases at 25?C the equilibrium constant can be expressed in terms of molarity Ke or partial pressure Kp. Which is true about the numerical value of Kp?

Kc value has?

In which of the following equilibria will Kc and Kp have the same value?