(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?

JEE MAIN 2015 All JEE MAIN

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

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Class 11

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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

What volume in $mL$ of $96\% \, w/w \, H_2SO_4$ is required to prepare $2 \, L$ of $3 \, M \, H_2SO_4$ solution? (Density of $H_2SO_4$ solution $= 1.83 \, g/mL$)

When a hydrated salt,$Na_2SO_4 \cdot nH_2O$,is heated,it loses $56\%$ of its weight and becomes anhydrous. What is the approximate value of $n$?

If $8 \ g$ of $NaOH$ is dissolved in $1 \ L$ of solution,its molarity will be ....... $M$.

How much volume of $1 \,N$ aqueous solution of $H_2SO_4$ should be taken, which will contain $0.2$ moles of $H_2SO_4$ (in $\,mL$)?

What volume (in $mL$) of $HCl$ solution containing $73 \ g$ per litre is required to completely neutralise sodium hydroxide solution,obtained by allowing $0.46 \ g$ of metallic sodium to act upon water?

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