October 9, 2015

Homework Help: CHEMISTRY

Posted by Anonymous on Tuesday, February 12, 2013 at 2:36pm.

How many grams of NaNO2 should be dissolved in 500cm3 solution of nitrous acid (HNO2) with concentration of 0.03mol/dm3 if we wish the solution to show a pH of 3.2

Ka = 4.5 * 10^-4
M(NaNO2) = 69 g/mol

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