A sample of a metal oxide has formula M0.83O1.00. The metal M can exist in two oxidation states +2 and +3. In the sample of M0.83O1.00, the percentage of metal ions existing in +2 oxidation state is _

Question

A sample of a metal oxide has formula M0.83O1.00. The metal M can exist in two oxidation states +2 and +3. In the sample of M0.83O1.00, the percentage of metal ions existing in +2 oxidation state is _______%. (nearest integer)

Prashant Kotian · Accepted Answer

Correct answer: .. Let no. of ions of M+2 = x M+3 = 0.83 – x 2x + 3(0.83 – x) + 1(–2) = 0 2x + 2.49 – 3x – 2 = 0 x = 0.49 %M2+ ions = . 49 . × 100 = 59.03

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