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Stoichiometry

Stoichiometry
Cp - Cv, for an ideal gas is equal to

2R
R
R/2
3R

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Stoichiometry
1 Kcal/kg. °C is equivalent to __________ BTU/lb. °F.

2.42
4.97
1
None of these

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Stoichiometry
The number of H⁺ in 1 c.c solution of pH 13 is

10¹³
6.023xl0⁷
6.023 x 10¹⁰
6.023 xl0¹³

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Stoichiometry
In case of a solution (not of a solid in a liquid), whose total volume is less than the sum of the volumes of its components in their pure states, solubility is

Independent of temperature
Increased with decrease in pressure
Unchanged with pressure changes
Increases with rise in pressure

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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
0.33
0.67
0.19

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Stoichiometry
Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules

Do work equal to loss in kinetic energy
Are above the inversion temperature
Do not lose energy on collision
Do not exert attractive force on each other

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