A 0186 M Solution of the Salt NaA Has a PH

question 108

Multiple Choice

A 0.186 M solution of the salt NaA has a pH of 8.40.Calculate the K_a value of the acid HA.

• A)3.4 \(\times\) 10^-11
• B)7.4 \(\times\) 10^-10
• C)2.9 \(\times\) 10^-4
• D)1.2 \(\times\) 10²
• E)none of these

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