A non stoichiometric compound C u 1.8 S is formed due to incorporation of C u 2 + ions in the lattice of cuprous sulphide. What percentage of C u 2 + ion in the total copper content is present in the compound?

Question

A non stoichiometric compound C u 1.8 S is formed due to incorporation of C u 2 + ions in the lattice of cuprous sulphide. What percentage of C u 2 + ion in the total copper content is present in the compound?, 88.88, 11.11, 99.8, 89.8

MARKS App · Accepted Answer

Let x C u 2 + and ( 1.8 - x ) C u + ions are present in the compound C u 1.8 S . Compound is electrically neutral. So + 2 x + ( 1.8 - x ) - 2 = x = 0.2 % C u 2 + = 0.2 1.8 × 100 = 11.11

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