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 10 8 12 6 10 8 12 6 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 1 kg of calcium carbide (CaC₂) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour? 15 10 5 20 15 10 5 20 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The heat change for the reaction, C(s) + 2S(s) → CS₂(l), is 104.2 kJ. It represents the heat of Formation Solution Fusion Combustion Formation Solution Fusion Combustion 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 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 Only OH⁻ and H⁺ ions react in every case The salt formed does not hydrolyse ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Which of the following expressions defines the Baume gravity scale for liquids lighter than water? °Be = 200(G-1) °Be = 145 - (145/G) °Be = (400/G) - 400 °Be = (140/G) - 130 °Be = 200(G-1) °Be = 145 - (145/G) °Be = (400/G) - 400 °Be = (140/G) - 130 ANSWER DOWNLOAD EXAMIANS APP
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