AIIMS2008ChemistryStates of Matter
Assertion : If ( H ₂ ) and ( Cl ₂ ) enclosed separately in the same vessel exert pressure of 100 and (200 ~mm ) respectively, their mixture in the same vessel at the same temperature will exert a pressure of (300 ~mm ). Reason : Dalton's law of partial pressures states that total pressure is the sum of partial pressures.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion.
- BIf both assertion and reason are true but reason is not the correct explanation of assertion.
- CIf assertion is true but reason is false.
- DIf both assertion and reason are false.
Correct answer
D. If both assertion and reason are false.
Step-by-step solution
H ₂ and Cl ₂ react chemically. Hence Dalton's law is not applicable. Dalton's law states that "at a given temperature, the total pressure exerted by two or more non-reacting gases occupying a definite volume is equal to the sum of the partial pressures of the component gases."