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Some Basic Concepts of Chemistry question

2015 · Q76
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Some Basic Concepts of Chemistry question

2015 · Q76

NEETChemistrySome Basic Concepts of ChemistryMCQ+4 / −1
A mixture of gases contains H2 and O2 gases in the ratio of 1 : 4 (w/w). What is the molar ratio of the two gases in the mixture ?
  1. A
    16 : 1
  2. B
    2 : 1
  3. C
    1 : 4
  4. D
    4 : 1
View written solutionFree

Correct answer: D

Ratio of weight of gases = wH2 : wO2 = 1 : 4

∴\therefore∴ Number of moles of H2 = 121 \over 221​

∴\therefore∴ Number of moles of O2 = 4324 \over 32324​

Ratio of moles of gases

= nH2 : nO2

= 121 \over 221​ : 4324 \over 32324​

= 121 \over 221​ ×\times× 32432 \over 4432​ = 4 : 1

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