Stoichiometry A gas occupies a volume of 283 c.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be __________ c.c. 283 566 293 141.5 283 566 293 141.5 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is 1.72 0.5 0.58 0.2 1.72 0.5 0.58 0.2 ANSWER DOWNLOAD EXAMIANS APP
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 0.33 0.40 0.67 0.19 0.33 0.40 0.67 0.19 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Two solutions A₁ and A₂ have pH value of 2 and 6 respectively. It implies that the solution A₁ is highly acidic Both A & C A₁ is more alkaline than solution A₂ A₁ is very slightly acidic A₁ is highly acidic Both A & C A₁ is more alkaline than solution A₂ A₁ is very slightly acidic ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Ideal solution is formed, when its components have zero Volume change Heat of mixing Neither A nor B Both A & B Volume change Heat of mixing Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute. Increase None of these Remain unchanged Decrease Increase None of these Remain unchanged Decrease ANSWER DOWNLOAD EXAMIANS APP
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