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At 90^(@)C, pure water has [H^(+)]=10^(-...

At `90^(@)`C, pure water has `[H^(+)]=10^(-6)` M.If 100 mL of `0.2` M HCl is added to 200 mL of `0.1` M KOH at `90^(@)`C then pH of the resulting solution will be :

A

5

B

6

C

7

D

None of these

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Knowledge Check

  • If 40 ml of 0.2 M KOH is added to 160 ml of 0.1 M HCOOH [K_a= 2 xx 10^(-4)]. The pOH of the resulting solution is

    A
    3.4
    B
    3.7
    C
    7
    D
    10.3

  • If 50 ml of 0.2 M KOH is added to 40 ml of 0.5 M HCOOH, the pH of the resulting solution is (K_(a) = 1.8 xx 10^(-4))

    A
    3.4
    B
    7.5
    C
    5.6
    D
    3.75

  • If 50ml of 0.2 M KOH is added to 40 ml of 0.05 M HCOOH , the pH of the resulting solution is ( K_(a)=1.8xx10^(-4) )

    A
    `3.4`
    B
    `7.5`
    C
    `5.6`
    D
    `3.75`

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