MCQ
Nitrogen gas is absorbed by
- ACalcium hydroxide
- BFerrous sulphate
- ✓Calcium carbide
- DAluminium carbide
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$Fe _{3} O _{4}( s )+4 CO ( g ) \rightarrow 3 Fe ( l )+4 CO _{2}( g )$
when $4.640 \,kg$ of $Fe _{3} O _{4}$ and $2.520 \,kg$ of $CO$ are allowed to react then the amount of iron (in $g$ ) produced is $....$
[Given : Molar Atomic mass $\left( g\, mol ^{-1}\right): Fe =56$
Molar Atomic mass $\left( g \,mol ^{-1}\right): 0=16$
Molar Atomic mass $\left( g\, mol ^{-1}\right):= C =12$
| Rate constant | Activation energy | |
| Step $1$ | $k_1$ | $E_{a_1} = 180\,kJ /mol$ |
| Step $2$ | $k_2$ | $E_{a_2} = 80\,kJ /mol$ |
| Step $3$ | $k_3$ | $E_{a_3} = 50\,kJ /mol$ |
overall rate constant, $k = {\left( {\frac{{{k_1}{k_2}}}{{{k_3}}}} \right)^{2/3}}$ overall activation energy of the reaction will be ........ $kJ\,mol$
