How do you determine the concentration of the unknown substance from the titration data?

(c H^{+}) (V H^{+}) = (c O H^{-}) (V O H^{-})

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(c H^{+}) (V H^{+}) / (c O H^{-}) (V O H^{-}) = 1

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(c H^{+}) (V H^{+}) / (c O H^{-}) (V O H^{-}) = - l o g (p H)

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- l o g (c H^{+}) (V H^{+}) = p H

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Solution

The correct option is A $(c H^{+}) (V H^{+}) = (c O H^{-}) (V O H^{-})$
You determine the concentration of the unknown substance from the titration data by using the following equation
$(c H^{+}) (V H^{+}) = (c O H^{-}) (V O H^{-})$
$(c H^{+})$ represents hydrogen ion concentration or acid concentration.
$(V H^{+})$ represents volume of acid solution.
$(c O H^{-})$ represents hydroxide ion concentration (or base solution concentration).
$(V O H^{-})$ represents volume of base solution.

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