A sample of a metal oxide has formula M0.83O1.00. The metal M can exist in two oxidation states +2 a — JEE Mains Chemistry Past Papers Chemistry Question
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)
Answer: .
💡 Solution & Explanation
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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