25 g of an unknown hydrocarbon upon burning produces 88 g of C O 2 and 9 g of H 2 O . This unknown hydrocarbon contains:

24 g of carbon and 1 g of hydrogen

18 g of carbon annd 7 g of hydrogen

22 g of carbon and 3 g of hydrogen

20 g carbon and 5 g of hydrogen

MEDIUM

Earn 100

Calculate volume of carbon dioxide produced due to the combustion of $1.4$ gram of ethane.

Important Questions on Some Basic Concepts of Chemistry

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

25 g

of an unknown hydrocarbon upon burning produces

88 g

C O_{2}

and

9 g

H_{2} O .

This unknown hydrocarbon contains:

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

For the following reaction, the mass of water produced from

445 g

C_{57} H_{110} O_{6}

is:

2 C_{57} H_{110} O_{6} (s) + 163 O_{2} (g) \to 114 {CO}_{2} (g) + 110 H_{2} O (l)

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

The number of moles of hydrogen molecules required to produce

20

moles of ammonia through Haber’s process is:

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

When

22.4

litres of

H_{2} (g)

is mixed with

11.2

litres of

C l_{2} (g),

each at STP, the moles of

H C l (g)

formed is equal to

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

1

gram of a carbonate

(M_{2} {CO}_{3})

on treatment with excess

HCl

produces

0.01186

moles of

{CO}_{2}

. The molar mass of

M_{2} {CO}_{3}

{gmol}^{- 1}

is:

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

The mass of

C a C O_{3}

required to react with

25 m L

0.75 M H C l

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

If we take

44

g of CO₂ and

14

g of N₂. What will be the mole fraction of CO₂ in the mixture?

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

In the reaction

4 A + 2 B + 3 C \to A_{4} B_{2} C_{3},

what will be the number moles of product formed, starting from one mole of

A, 0.6

moles of

B

and

0.72

moles of

C ?

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

When

32.25 g m

ethyl chloride dehydro halogenated, if gives

50 %

. Alkene, what is the mass of product. (atomic mass of chlorine

= 35.5

)

HARD

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

1 g Mg

was burnt in a closed vessel containing

2 g

oxygen. Which of the following are not correct ?

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

The number of atoms in

4.25 g of {NH}_{3}

is approximately :

HARD

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

The number of atoms present in $0.1$ mole of $P_{4}$ (atomic mass = 31) are :

HARD

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

1.2 g

M g

(at. mass

24

) will produce

M g O

equal to

HARD

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

If 8.4 gm of cyclohexane burns completely in oxygen, how many moles of CO₂ is produced?

HARD

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

5 moles of Ba(OH)₂ are treated with excess of CO₂. How much BaCO₃ will be formed?

HARD

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

The one which has least mass is :

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

A person adds

1.71

gram of sugar (

C_{12} H_{22} O_{11}

) in order to sweeten his tea. The number of carbon atoms added are (molecular mass of sugar

= 342

)

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

What volume of hydrogen gas, at 273 K and 1 atm. pressure will be consumed in obtaining 21.6 g of elemental boron (atomic mass = 10.8)from the reduction of boron trichloride by hydrogen ?

MEDIUM

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

When 10 g of 90% pure lime stone is heated completely, the volume (in litres) of

{C O}_{2}

is liberated at STP is

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Stoichiometry and Stoichiometric Calculations

5.6 litre of a gas at N.T.P. weights equal to 8 g. The vapour density of gas is :

Calculate volume of carbon dioxide produced due to the combustion of 1.4 gram of ethane​.

Important Questions on Some Basic Concepts of Chemistry

Learn and Prepare for any exam you want !

Calculate volume of carbon dioxide produced due to the combustion of $1.4$ gram of ethane.