(B) The ion exchange reaction is: $2(C_8H_7SO_3^- Na^+) + Ca^{2+} \rightarrow (C_8H_7SO_3^-)_2 Ca^{2+} + 2Na^+$. From the stoichiometry,$2 \ mol$ of t

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(B) The ion exchange reaction is: $2(C_8H_7SO_3^- Na^+) + Ca^{2+} \rightarrow (C_8H_7SO_3^-)_2 Ca^{2+} + 2Na^+$. From the stoichiometry,$2 \ mol$ of the resin are required to exchange $1 \ mol$ of $Ca^{2+}$ ions. Therefore,$1 \ mol$ of the resin can take up $\frac{1}{2} \ mol$ of $Ca^{2+}$ ions. Given the molar mass of the resin is $206 \ g/mol$,the uptake capacity per gram of resin is $\frac{1 \ mol \ Ca^{2+}}{2 \times 206 \ g \ resin} = \frac{1}{412} \ mol/g$.

Class 11 Chemistry Some Basic Concepts of Chemistry Chemical stoichiometry

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The molecular formula of a commercial resin used for exchanging ions in water softening is $C_8H_7SO_3^- Na^+$ $(Mol. \ wt. 206)$. What would be the maximum uptake of $Ca^{2+}$ ions by the resin when expressed in mole per gram resin?

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A
$\frac{2}{309}$
B
$\frac{1}{412}$
C
$\frac{1}{103}$
D
$\frac{1}{206}$

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Some Basic Concepts of Chemistry

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Chemical stoichiometry

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The molecular formula of a commercial resin used for exchanging ions in water softening is $C_8H_7SO_3^- Na^+$ $(Mol. \ wt. 206)$. What would be the maximum uptake of $Ca^{2+}$ ions by the resin when expressed in mole per gram resin?

Similar Questions

The heat of combustion of methane is $-800 \ kJ \ mol^{-1}$. What is the heat of combustion for $4 \times 10^{-4} \ kg$ of methane?

If the density of iron is $7.86 \, g \, cm^{-3}$ and its atomic mass is $55.85 \, u$,then find the volume occupied by $1 \, mol$ of iron atoms in $cm^{3}$.

When equal volumes of $0.1 \, M \, AgNO_3$ and $0.2 \, M \, NaCl$ are mixed,the concentration of $NO_3^-$ in the resulting mixture will be .......... $M$.

$20 \ g$ of iron pyrite,$FeS_2$,is roasted completely and the $SO_2$ gas produced is absorbed completely in $400 \ mL$ of $NaOH$ solution. If only $50\%$ of the $NaOH$ is used in the reaction,what was the molarity of the $NaOH$ solution?

When excess $CO_2$ is passed through a solution containing $0.205 \ mol$ of $BaCO_3$,what is the mass of $Ba(HCO_3)_2$ formed in grams?

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