Back to SOME BASIC CONCEPTS OF CHEMISTRY

JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

1 Hard

1 of 1

Analyzing +4 | -1

One mole of mixture of

\mathrm{N}_2, \mathrm{NO}_2

and

\mathrm{N}_2 \mathrm{O}_4

has a mean molar mass of

55.4 \mathrm{~g}.

On heating to a temperature, at which all the

\mathrm{N}_2 \mathrm{O}_4

is dissociated into

\mathrm{NO}_2,

the mean molar mass tends to a lower value of

39.6 \mathrm{~g}.

What is the mole ratio of

\mathrm{N}_2, \mathrm{NO}_2

and

\mathrm{N}_2 \mathrm{O}_4

in the original mixture?

View answer and explanation

Correct option: A

5: 1: 4

Option A (5: 1: 4) is correct because solving the system of equations derived from the given molar mass data yields the mole ratio of N2, NO2, and N2O4 as 5:1:4.

More Questions from SOME BASIC CONCEPTS OF CHEMISTRY

Practice All Chapter MCQs →

If a mixture containing 3 moles of hydrogen and 1 mole of nitrogen is converted completely into ammonia, the ratio of initial and final volumes under the same temperature and pressure would be: How many g are present in one mole of Ag? 8 g of NaOH is dissolved in 18 g of

{H_2}O.

Mole fraction of NaOH in solution and molality (in

mol\,\,k{g^{ - 1}})

of the solution respectively are

2.24 {~L}

{CH}_4

at NTP contains :- One litre of

{CO}_2

is passed through red hot coke. The volume becomes 1.4 litres at same temperature and pressure. The composition of products is How many millilitre of

0.5 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4

are needed to dissolve

0.5 \mathrm{~g}

\mathrm{Cu}(\mathrm{II})

carbonate?