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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

1 Medium

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Analyzing +4 | -1

A compound has molar mass of

147 \mathrm{~g}

. It contains

49 \%\mathrm{C}

and

2.72 \% \mathrm{H}

. On Carius estimation

2.561 \mathrm{~mg}

of the compound gave

5 \mathrm{~mg}

\mathrm{AgCl}

. Find the empirical and molecular formula.

View answer and explanation

Correct option: A

\mathrm{C}_3 \mathrm{H}_2 \mathrm{Cl}, \mathrm{C}_6 \mathrm{H}_4 \mathrm{Cl}_2

Option A (

\mathrm{C}_3 \mathrm{H}_2 \mathrm{Cl}, \mathrm{C}_6 \mathrm{H}_4 \mathrm{Cl}_2

) is correct because the empirical formula is calculated from the percentage composition and the molecular formula is a multiple of the empirical formula.

More Questions from SOME BASIC CONCEPTS OF CHEMISTRY

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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?