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Refer to Q13, and to this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH?

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Refer to Q13, and to this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH?

(a) 4.00

(b) 4.53

(c) 4.63

(d) 4.50

I had been asked this question by my school principal while I was bunking the class.

This interesting question is from Buffers in portion Introduction to Fermentation Processes & Media for Industrial Fermentation of Bioprocess Engineering

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Right option is (c) 4.63

The best I can explain: NaOH is a strong base. It will react nearly quantitatively with HOAc to produce OAc-.

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