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What is the concentration of H3O^+ and O...

What is the concentration of `H_3O^+` and `OH^-` ions in water at `298` K ?

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To find the concentration of `H3O^+` and `OH^-` ions in water at 298 K, we can follow these steps: ### Step 1: Understand the relationship between `H3O^+`, `OH^-`, and the ion product of water (`Kw`). At 298 K (25 °C), the ion product of water (`Kw`) is known to be `1.0 x 10^-14`. This means: \[ K_w = [H_3O^+][OH^-] \] ### Step 2: Recognize that pure water is neutral. In pure water, the concentration of hydronium ions (`H3O^+`) is equal to the concentration of hydroxide ions (`OH^-`). Therefore, we can denote: ...
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The product of molar concentration of H_^+ and OH^- ions, the value of K_w at 25^oC is _______

Assuming that Ba(OH)_2 is completely ionised in aqueous solution under the given conditions the concentration of H_3O^+ ions in 0.005 M aqueous solution of Ba(OH)_2 at 298 K is __________ xx 10^(-12) mol L^(-1) . (Nearest integer)

Knowledge Check

  • The concentration of hydronium (H_(3)O^(+)) ion in water is

    A
    Zero
    B
    `1 xx 10^(-7)` gm ion /litre
    C
    `1 xx 10^(-14)` gm ion/litre
    D
    `1 xx 10^(-7)` gm ion/litre

  • The concentration of water molecules in pure water at 298 K is

    A
    `10^(-7)M`
    B
    `55.5M`
    C
    `5.55M`
    D
    `7.26M`

  • In the Daniel cell, if the concentrations of Zn^(2+) and Cu^(2+) ions are doubled at 298 K , the e.m.f. Of the cell __________.

    A
    is doubled
    B
    is reduced to half
    C
    remains same
    D
    becomes four times

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