How many grams of Ca{C₂}{O₄} (molecular weight = 128 ) on dissolving in distilled water will giv

English

Gujarati

Hindi

6-2.Equilibrium-II (Ionic Equilibrium)

medium

How many grams of $Ca{C_2}{O_4}$ (molecular weight $= 128$) on dissolving in distilled water will give a saturated solution $[{K_{sp}}(Ca{C_2}{O_4}) = 2.5 \times {10^{ - 9}}$ $mo{l^2}{l^{ - 2}}]$

A

$0.0064$

B

$0.1280$

C

$0.0128$

D

$1.2800$

Solution

(a) Solubility of $Ca{C_2}{O_4} = \sqrt {{K_{sp}}} = \sqrt {2.5 \times {{10}^{ – 9}}} $

$ = 5 \times {10^{ – 5}}\,mol{L^{ – 1}}$

$ = 5 \times {10^{ – 5}} \times 128 = 640 \times {10^{ – 5}}$$ = 0.0064\,g$

Standard 11

Chemistry

Share

Similar Questions

When $1.88 \,g$ of $AgBr (s)$ is added to a $10^{-3} \,M$ aqueous solution of $KBr$, the concentration of $Ag ^{+}$is $5 \times 10^{-10}\, M$. If the same amount of $AgBr (s)$ is added to a $10^{-2}\, M$ aqueous solution of $AgNO _3$, the concentration of $Br ^{-}$ is

medium

(KVPY-2014)

The solubility product constant of $Ag _{2} Cr O _{4}$ and $AgBr$ are $1.1 \times 10^{-12}$ and $5.0 \times 10^{-13}$ respectively. Calculate the ratio of the molarities of the molarities of their saturated solutions.

medium

The molar solubility of $PbI_2$ in $0.2\,M\,\, Pb(NO_3)_2$ solution in terms of solubility product of $PbI_2$ is

medium

When equal volumes of the following solutions are mixed, precipitation of $AgCl\,({K_{sp}} = 1.8 \times {10^{ – 10}})$ will occur only with

medium

(IIT-1988)

What is the solubility of calcium fluoride in a saturated solution, if its solubility product is $3.2 \times {10^{ – 11}}$

medium