Stoichiometry
The amount of Zn (atomic weight = 65) required to form 224 c.c. of H₂ at N.T.P. on treatment with dilute H₂SO₄ will be __________ gm.

0.065
0.65
6.5
65

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Stoichiometry
Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the

Volume in the liquid state is negligible compared with that in the vapor state
All of these
Vapor follows the ideal gas law
Molal latent heat of vaporisation is constant within the limited temperature range

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