Question

The buffer solution is comprised of 0.0850M NaH2PO4 and 0.100M Na2HPO4. You have 1.5L of this...

The buffer solution is comprised of 0.0850M NaH2PO4 and 0.100M Na2HPO4. You have 1.5L of this buffer and add 0.050 mole of HCl to it.

What is the new pH?

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Answer #1

Concept: the added acid will convert salt back to acid form. Now this question can be solved as shown below

Hence, new pH = 6.96 answer

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