## Question

###### 5.(12 pts) A buffer was prepared by dissolving 0.40 mol of benzoic acid (Ka 6.3 10-5) and 0.50 mol of sodium benzoatc in sufficicnt purc watcr tO form 1.00 L solution. To this solution was added 30.00 mL of 2.00 M HCI solution_ What was thc pH of the ncw solution? CsH,COOH(aq) + H_O() < H,0' (aq)+ C,H,COO (ag)

5.(12 pts) A buffer was prepared by dissolving 0.40 mol of benzoic acid (Ka 6.3 10-5) and 0.50 mol of sodium benzoatc in sufficicnt purc watcr tO form 1.00 L solution. To this solution was added 30.00 mL of 2.00 M HCI solution_ What was thc pH of the ncw solution? CsH,COOH(aq) + H_O() < H,0' (aq)+ C,H,COO (ag)

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