The concentration of hydrogen ion in a sample | vedclass

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Question

(B) The $pH$ of a solution is defined as the negative logarithm of the hydrogen ion concentration: $pH = -\log[H^+]$.Given $[H^+] = 4.7 	imes 10^{-4}

Vedclass · Accepted Answer

$3.33$

Vedclass · Answer

(B) The $pH$ of a solution is defined as the negative logarithm of the hydrogen ion concentration: $pH = -\log[H^+]$.Given $[H^+] = 4.7 	imes 10^{-4} \ M$.$pH = -\log(4.7 	imes 10^{-4})$.Using the property $\log(a 	imes b) = \log a + \log b$,we get:$pH = -(\log 4.7 + \log 10^{-4})$.$pH = -(\log 4.7 - 4)$.$pH = 4 - \log 4.7$.Since $\log 4.7 \approx 0.672$,$pH = 4 - 0.672 = 3.328 \approx 3.33$.

The concentration of hydrogen ion in a sample solution is $4.7 \times 10^{-4} \ M$. Find its $pH$.

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