Use the henderson–hasselbalch equation to calculate the ph of each solution: part aa solution that is 0.145 m in propanoic acid and 0.115 m in potassium propanoate express your answer using two decimal places. php h = nothingrequest answerpart ba solution that contains 0.690% c5h5n by mass and 0.955% c5h5nhcl by massexpress your answer using two decimal places. php h = nothing request answer part a solution that is 11.0 g of hf and 25.5 g of naf in 125 ml of solutionexpress your answer using two decimal places. php h = nothingrequest answerprovide feedback