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Calculate the pH of a solution which con...

Calculate the `pH` of a solution which contains `100mL` of `0.1 M HC1` and `9.9 mL` of `1.0 M NaOH`.

Text Solution

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The correct Answer is:
C, D
`{:(,HC1+,NaOHrarr,NaC1+,H_(2)O),("mEq before reaction",100xx0.1,9.9xx1,,),(,=0,=9.9,,),("mEq after reaction",0.1,0,9.9,9.9):}`
`:. [H^(o+)]` left from `HC1 =(0.01)/(109.9) = 9.099 xx 10^(-4)M`
`:. pH =- log [H^(o+)] =- log (9.099 xx 10^(-4))`
`pH = 3.0409`
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Knowledge Check

  • Calculate the pH of a solution which contains 10 ml of 1 M HCl and 10 ml of 2M NaOH

    A
    `11.7`
    B
    `12.7`
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    B
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    C
    `2.0409`
    D
    None of these

  • Calculate the pH of solution obtained by mixing 10 ml of 0.1 M HCl and 40 ml of 0.2 M H_(2)SO_(4)

    A
    `0.3685`
    B
    `0.4685`
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    `1.3685`
    D
    `1.4684`

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