Chemistry
The ratio between the volumes occupied by 4.4 grams of carbon dioxide and 2 grams of hydrogen gas is:
- 2.2 : 1
- 1 : 2.2
- 1 : 10
- 10 : 1
Mole Concept
ICSE Sp 2025
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Answer
1 : 10
Reason —
Molar mass of CO2 = 12 + 2 x 16 = 44 g/mole
∴ Moles of 4.4g CO2 = 0.1
Molar mass of H2 = 2 x 1 = 2 g/mole
∴ Moles of 2g H2 = 1
Under the same conditions of temperature and pressure, the volume of a gas is directly proportional to the number of moles. Therefore, the volume ratio will be the same as the mole ratio.
Volume ratio = = = 1 : 10
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