Oc inmaking and stu dent are working together in lab to make a buffer. doc measures exactly 30.0 ml of 0.0635 m acetic acid solution while stu measures exactly 45.0 ml of 0.0285 m sodium acetate solution. they combine the two solutions to form their buffer. stu and doc explore the propetires of their buffer by answering the next seven questions. first, what is the total volume of the buffer when the two solutions are combined

The total volume of the buffer is 75,0mL

Explanation:

A buffer is a mixture of a weak acid with its conjugate base or a weak base with its conjugate acid.

The buffer than Stu and Doc made is:

CH₃COOH ⇄ CH₃COO⁻ + H⁺

Doc add 30.0 mL of 0.0635 M CH₃COOH while Stu add 45.0 mL of 0.0285 M NaCH₃COO (CH₃COO⁻)

Thus, the total volume of the buffer is:

30,0mL + 45,0mL = 75,0 mL

I hope it helps!

its first and third is your answer i did the qustion the fourth isnt right