$HClO$ is a weak acid. The concentration of ${H^ + }$ ions in $0.1\,M$ solution of $HClO\,({K_a} = 5 \times {10^{ - 8}})$ will be equal to

  • A

    $7.07 \times {10^{ - 5}}\,m$

  • B

    $5 \times 10^{-9}\,\,m$

  • C

    $5 \times {10^{ - 7}}\,m$

  • D

    $7 \times {10^{ - 4}}\,m$

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