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1 atm =…………..pascal (1.01xx10^(5),1.01xx...

1 atm =…………..pascal (`1.01xx10^(5),1.01xx10^(-5),1.01xx10^(5))`

Text Solution

Verified by Experts

The correct Answer is:
`1.01xx10^(5)`
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At 298 K temperature, there are acids and its K_a value are as under. HF(3.5xx10^(-4)),CH_3COOH (1.74xx10^(-5)),HClO(3.0xx10^(-8)),C_6H_5OH (1.3xx10^(-10)),HCOOH(1.8xx10^(-4)) Arrange these acids in decreasing order of their acidic strength.

Evaluate : (1.01)^(10)+(1-0.01)^(10)

Knowledge Check

  • The ionisation constant of an acid, K_a is the measure of strength of an acid. The K_a values of acetic acid, hypochlorous acid and formic acid are 1.74 xx 10^(-5), 3.0 xx 10^(-8) and 1.8 xx 10^(-4) respectively. Which of the following orders of pH of 0.1 mol dm^(-3) solutions of these acids is correct ?

    A
    acetic acid `gt` hypochlorous acid `gt` formic acid
    B
    hypochlorous acid `gt` acetic acid `gt` formic acid
    C
    formic acid `gt` hypochlorous acid `gt` acetic acid
    D
    formic acid `gt` acetic acid `gt` hypochlorous acid

  • The first and second dissociation constants of an acid H_2A are 1.0 xx 10^(-5) and 5.0 xx 10^(-10) respectively. The overall dissociation constant of the acid will be

    A
    `0.2xx10^5`
    B
    `5.0xx10^(-5)`
    C
    `5.0xx10^15`
    D
    `5.0xx10^(-15)`

  • calculate the wavelength (in nanometer ) associated with a electron moving at 1.0 xx 10^(3) ms^(-1) (m= 1.656 xx 10^(27))

    A
    0.40 nm
    B
    14. nm
    C
    2.5 nm
    D
    0.32 nm

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    The presssure of a medium is changed from 1.01xx10^(5) Pa to 1.165xx10^(5) Pa and change in volume is 10 % keeping temperature constant . The bulk modulus of the medium is (a) 204.8 xx 10^(5) Pa (b) 102.4xx10^(5) Pa (c ) 5.12xx10^(5) Pa (d) 1.55xx10^(5) Pa

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