Versene, a chelating agent having chemical formula ${{\rm{C}}_2}{{\rm{H}}_4}{{\rm{N}}_2}{\left( {{{\rm{C}}_2}{{\rm{H}}_2}{{\rm{O}}_2}{\rm{Na}}} \right)_4}$. If each mole of this compound could bind 1 mole of ${\rm{C}}{{\rm{a}}^{2 + }}$,then the rating of pure versene expressed as mg of ${\rm{CaC}}{{\rm{O}}_3}$ bound per g of chelating agent is:

JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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Versene, a chelating agent having chemical formula

{\mathrm{C}_2}{\mathrm{H}_4}{\mathrm{N}_2}{\left( {{\mathrm{C}_2}{\mathrm{H}_2}{\mathrm{O}_2}\mathrm{Na}} \right)_4}

. If each mole of this compound could bind 1 mole of

\mathrm{C}{\mathrm{a}^{2 + }}

,then the rating of pure versene expressed as mg of

\mathrm{CaC}{\mathrm{O}_3}

bound per g of chelating agent is:

View answer and explanation

Correct option: D

263 mg

The correct answer is D (263 mg) because the rating of pure versene is calculated based on the molar mass of CaCO3 and the chelating agent.