Question

In: Chemistry

Consider the given reaction. MgCO3(s) + 2 HCl(aq) — MgCl2(aq) + H2O(l) + CO2(g)

Consider the given reaction.

MgCO3(s) + 2 HCl(aq) — MgCl2(aq) + H2O(l) + CO2(g)

Calculate the atom economy of this reaction to form carbon dioxide assuming that no other reactions are occurring.

atom economy = _______ %

Expert Solution

Solution: Atom economy = 28.025%

Explanation;

MgCO₃ + 2 HCl → MgCl₂ + H₂O + CO₂

We know that atom economy = ( total mass of desired product / total mass of reactant ) x 100%

At. wt. of Mg = 24, O = 16, C = 12, H = 1, Cl = 35.5

MgCO₃ = 24 + 12 +(3 x 16) = 24+ 12 + 48 =84

2 HCl = 2 x (1 + 35.5) = 2 x 36.5 = 73

Total mass of reactant = 84 + 73 = 157

Total mass of desired product, CO₂ = 12 + (2 x 16) = 12 + 32 = 44

atom economy = (44 / 157) x 100% = 28.025%

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