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Versene, a chelating agent having chemical formula C2H4(C2H2Na)4.If each mole of this compound culd bind 1 mole of Ca 2+ ,then the rating of pure versene expressed as mg of CaCo3 bound per g of chelating agent.

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anshik bansal , 14 Years ago
Grade 11
anser 1 Answers
Sanjeev Malik IIT BHU

Last Activity: 14 Years ago

molar mass of versene= 224  mass CaCO3

1 mole versene = i mole Ca2+ = 1 mole CaCO3

i.e 224 gm versene corresponds to 100 gm CaCO3

so 1 gm versene = 100/224 gm CaCO3

                        = 100/224  * 1000  mg of CaCO3

                        =446.428 per mg CaCO3 = rating

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