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Stoichiometry

Stoichiometry
For a given mass of a gas at constant temperature, if the volume 'V' becomes three times, then the pressure 'P' will become

9P²
3P
9P
P/3

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Stoichiometry
For an ideal gas, the compressibility factor

Is unity at all temperature
Decreases with pressure rise
Zero
Is unity at Boyle's temperature

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Stoichiometry
One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH₄ + 2O₂ → CO₂ + 2H₂O. Both the reactants and products are in gas phase. ΔH°298 = - 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about

0.40
0.67
0.33
0.19

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Stoichiometry
Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult's law is proportional to the

Temperature
None of these
Moles of non-volatile solute
Volume of solution

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Stoichiometry
Compressibility factor of a real gas is the ratio of the actual volume to that predicted by ideal gas law. As the pressure of the gas approaches zero, the compressibility factor approaches

∞
1
0.24

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Stoichiometry
The value of the gas-law constant 'R' is 1.987

Both B & C
Btu/lb-mole.°R
Kcal/kg-mole.°K
Kcal/kg-mole.°C

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