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Chemistry-

General

Easy

Question

The H⁺ ion concentration of a solution is 4×10^–5 M. Then the OH^– ion concentration of the same solution is

$4 \times 10^{- 5} M$
$2.5 \times 10^{- 9} M$
$1.0 \times 10^{- 7} M$
$2.5 \times 10^{- 10} M$

The correct answer is: $2.5 cross times 10 to the power of negative 10 end exponent M$

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