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1. Some basic concept of chemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry1. Some basic concept of chemistry1 Mark
MCQ
To obtain maximum mass of $NO_2$ from a given mass of a mixture of $NH_3$ and $O_2$ , the ratio of mass of $NH_3$ to $O_2$ should be $N{H_3} + {O_2} \to N{O_2} + {H_2}O$
  • A
    $\frac{{17}}{{40}}$
  • B
    $\frac{{17}}{{64}}$
  • ✓
    $\frac{{17}}{{56}}$
  • D
    $\frac{{17}}{{32}}$
✓

Answer

Correct option: C.
$\frac{{17}}{{56}}$
c
$4 \mathrm{NH}_{3}+7 \mathrm{O}_{2} \longrightarrow \mathrm{NO}_{2}+6 \mathrm{H}_{2} \mathrm{O}$

$\frac{\mathrm{NH}_{3}}{\mathrm{O}_{2}}=\frac{4 \times 17}{7 \times 32}=\frac{17}{56}$

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