mistake in Table 16.3 and the solution for EOC problem 16.70

[Zellmer, Robert]

There is a mistake in Table 16.3 and in the solutions manual for 16.70.  They are related.

Problem 16.70 deals with calculating the pH for a solution of tartaric acid.  This is a
diprotic acid.  We covered this in class yesterday.  Table 16.3 has several polyprotic
acids and their Ka values.

The formula for tartaric acid is incorrect.  It's missing two H atoms.  It should be
C2H4O2(CO2H)2 or H2C4H4O6 (with the 2 acidic H atoms written to the far left).

In the solutions manual it gives the pH as 1.18.  It should be 1.81.

Dr. Zellmer
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