Stoichiometry Two solutions A₁ and A₂ have pH value of 2 and 6 respectively. It implies that the solution A₁ is more alkaline than solution A₂ Both A & C A₁ is highly acidic A₁ is very slightly acidic A₁ is more alkaline than solution A₂ Both A & C A₁ is highly acidic A₁ is very slightly acidic ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg.? 0.1 0.6 0.4 0.2 0.1 0.6 0.4 0.2 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity?Vapour pressure of water at 20°C is 17.5 mm Hg. 80.38 79.62 80 78.51 80.38 79.62 80 78.51 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry At room temperature, the product [H⁺] [OH⁻] in a solution is 10⁻¹⁴ moles/litre. If, [OH⁻] = 10⁻⁶ moles/litre, then the pH of the solution will be 6 10 8 12 6 10 8 12 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is N₂O₄ N₂O₃ N₂O₅ None of these N₂O₄ N₂O₃ N₂O₅ None of these ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The combustion equations of carbon and carbon monoxide are as follows: C + O₂ = CO₂, ΔH = - 394 kJ/kg . mole CO + 1/2 O₂ = CO₂, ΔH = - 284.5 kJ/kg. mole. The heat of formation of CO is __________ kJ/kg. mole. +100 +180 -109.5 +109.5 +100 +180 -109.5 +109.5 ANSWER DOWNLOAD EXAMIANS APP
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