Question

A buffer solution was prepared by dissolving 3.71 g Na2CO3 and 3.78 g NaHCO3 in 0.2 Ldistilled water.(MM of Na2CO3 = 106.0 g mol-1, NaHCO3 = 84.01 g mol-1, Ka of HCO3- is 4.7 x 10-11)a) Explain why a mixture of Na2CO3 NaHCO3 in water has a buffering action.b) Calculate the pH of the solution.c) Assuming that there is no change in volume, predict the pH of the solution (decreases/increases) when 0.020 mol of NaOH is added to the solution?

Answer 1

Explanation:

fgsghshhagstejHsllakahfatwhahZ hi tsftzhsjjsk