I need 100 mL of a buffer with a pH of 5.20 and it's acetic acid or HC2H3O2. So I need to find out how many grams of acetic acid are needed to make this buffer. (Ka = 1.8 x 10-5)
What I have so far...
pH = pKa + log(base/acid)
5.20 = 4.74 + logx
x = 2.884 M
2.884 M * .1 L = .2884 mol
.2884 mol * 60.052 g = 17.32 g
i know this is wrong because the answer is 11.54 g.
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
APPROVED BY CLIENTS
"assignmentexpert.com" is professional group of people in Math subjects! They did assignments in very high level of mathematical modelling in the best quality. Thanks a lot
Comments
Leave a comment