Monday, November 22, 2010

How much will the pH change?

A beaker with 200 of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 . A student adds 4.10 of a 0.370 solution to the beaker. The of acetic acid is 4.760.How much will the pH change?
This question is impossible to answer as three vital bits of info are missing .. see below. This explains the lack of response.



A beaker with 200 of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 . A student adds 4.10 [WHAT] of a 0.370 solution [OF WHAT] to the beaker. The [WHAT] of acetic acid is 4.760.

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