If $20 \ mL$ of an acidic solution of $pH$ $3$ is diluted to $100 \ mL$,the $H^{+}$ ion concentration will be
- A$1 \times 10^{-3} \ M$
- B$2 \times 10^{-3} \ M$
- C$2 \times 10^{-4} \ M$
- D$0.02 \times 10^{-4} \ M$
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For the following Assertion and Reason,the correct option is
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Reason : The dissociation of water into $H^{+}$ and $OH^{-}$ is an exothermic reaction.
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Reason : The dissociation of water into $H^{+}$ and $OH^{-}$ is an exothermic reaction.
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