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  • A sample of a metal oxide has formula <img alt="\mathrm{M}_{0.83} \mathrm{O}_{1.00}" src="https://entrancecorner.oncodecogs.com/gif.latex?%5Cmathrm%7BM%7D_%7B0.83%7D%20%5Cmathrm%7BO%7D_%7B1.00%7D"

A sample of a metal oxide has formula \mathrm{M}_{0.83} \mathrm{O}_{1.00}. The metal M can exist in two oxidation states + 2 and + 3. In the sample of \mathrm{M}_{0.83} \mathrm{O}_{1.00}, the percentage of metal ions existing in + 2 oxidation state is %. (nearest integer)

Option: 1

59


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

\begin{aligned} & \mathrm{M}^{2+} \rightarrow \mathrm{x} \quad \mathrm{M}^{3+} \rightarrow(0.83-\mathrm{x}) \\ & 2 \mathrm{x}+3(0.83-\mathrm{x})=2 \\ & \mathrm{x}=2.49-2=0.49 \\ & \% \text { of } \mathrm{M}^{2+}=\frac{0.49}{0.83} \times 100=59 \% \end{aligned}

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Divya Prakash Singh

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