Stoichiometry Na₂SO₄. 10H₂O crystals are formed by cooling 100 Kg of 30% by weight aqueous solution of Na₂SO₄. The final concentration of the solute in the solution is 10%. The weight of crystals is 32.2 58.65 45.35 20 32.2 58.65 45.35 20 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10⁻³ T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to - 100°C is 16.15 kJ 18.33 kJ 18.11 kJ 10.73 kJ 16.15 kJ 18.33 kJ 18.11 kJ 10.73 kJ ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Heat of neutralisation of HCl and NaOH is - 57.46 kJ/Kg mole. The heat of ionisation of water will be __________ kJ/Kg mole. 57.46 -57.46 -28.73 114.92 57.46 -57.46 -28.73 114.92 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In a neutral solution OH⁻ ions are absent H⁺ ions are absent None of these Both H⁺ and OH⁻ ions are present in very small but equal concentration OH⁻ ions are absent H⁺ ions are absent None of these Both H⁺ and OH⁻ ions are present in very small but equal concentration ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry With increase in the solute concentration, the specific heat of aqueous solutions Either A or B; depends on the type of solution Increases Decreases Remains unchanged Either A or B; depends on the type of solution Increases Decreases Remains unchanged 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 0.40 0.67 0.19 0.33 0.40 0.67 0.19 0.33 ANSWER DOWNLOAD EXAMIANS APP
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