Stoichiometry If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is __________ times. 100 10000 1000 10 100 10000 1000 10 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry For an endothermic reaction, the minimum value of energy of activation will be (where, ΔH = enthalpy of the reaction) Δ H >ΔH Δ H >ΔH ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry For the gaseous phase reaction, N₂ + O₂ ⇋ 2NO, ΔH = + 80 kJ/kg. mole; the decomposition of NO is favoured by Decrease in temperature Increase in pressure Increasing the concentration of N₂ Decrease in pressure Decrease in temperature Increase in pressure Increasing the concentration of N₂ Decrease in pressure 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 0.19 0.40 0.67 0.33 0.19 0.40 0.67 0.33 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because Only OH⁻ and H⁺ ions react in every case The salt formed does not hydrolyse The strong base and strong acid reacts in aqueous solution The strong base and strong acid reacts completely Only OH⁻ and H⁺ ions react in every case The salt formed does not hydrolyse The strong base and strong acid reacts in aqueous solution The strong base and strong acid reacts completely ANSWER DOWNLOAD EXAMIANS APP
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. 65 0.065 6.5 0.65 65 0.065 6.5 0.65 ANSWER DOWNLOAD EXAMIANS APP
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