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JEE Main 202529 JanuaryMorning Shift
Exam
JEE Main
Year
2025
Date
29 January
Shift
Morning Shift
Subject
Chemistry
Chapter
d and f Block Elements

JEE Main 2025 · 29 January · Morning Shift · Chemistry · d and f Block Elements

The molar mass of the water insoluble product formed from the...

The molar mass of the water insoluble product formed from the fusion of chromite ore (\left(\mathrm{FeCr}_2 \mathrm{O}_4\right)) with (\mathrm{Na}_2 \mathrm{CO}_3) in presence of (\mathrm{O}_2) is _______ (\mathrm{g} \mathrm{mol}^{-1}).

Correct answer

0

Step-by-step solution

FeCr2O4+Na2CO3+O2→Na2CrO4+Fe2O3+CO2\mathrm{FeCr}_2 \mathrm{O}_4+\mathrm{Na}_2 \mathrm{CO}_3+\mathrm{O}_2 \rightarrow \mathrm{Na}_2 \mathrm{CrO}_4+\mathrm{Fe}_2 \mathrm{O}_3+\mathrm{CO}_2 Insoluble product will be Fe2O3\mathrm{Fe}_2 \mathrm{O}_3 molar mass =56×2+16×3=56 \times 2+16 \times 3=112+48=160\begin{aligned} & =112+48 \\ & =160 \end{aligned}$$
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