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  • A reaction is given by: <img alt="\mathrm{aFe}^{2+}+\mathrm{Cr}_2 \mathrm{O}_7^{2-}+\mathrm{bH}^{+} \rightarrow \mathrm{cFe}^{3+}+\mathrm{dCr}^{3+}+\mathrm{eH}_2 \mathrm{O}" src="https://entra

A reaction is given by: \mathrm{aFe}^{2+}+\mathrm{Cr}_2 \mathrm{O}_7^{2-}+\mathrm{bH}^{+} \rightarrow \mathrm{cFe}^{3+}+\mathrm{dCr}^{3+}+\mathrm{eH}_2 \mathrm{O}. 

The ratio (a+b)/ (c+d+e) is

Option: 1

3/4


Option: 2

4/3


Option: 3

2/3


Option: 4

1/3


Answers (1)

best_answer

6 \mathrm{Fe}^{2+}+\mathrm{Cr}_2 \mathrm{O}^{2-}+14 \mathrm{H}^{+} \rightarrow 6 \mathrm{Fe}^{3+}+2 \mathrm{Cr}^{3+}+7 \mathrm{H}_2 \mathrm{O} .

So, the ratio is \frac{(6+14)}{(6+2+7)}=\frac{20}{15}=\frac{4}{3}

Posted by

sudhir kumar

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