Stoichiometry A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) 485 345 350 140 485 345 350 140 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface. This statement pertaining to the solubility of gases in liquid is the __________ law. Raoult's None of these Henry's Amgat's Raoult's None of these Henry's Amgat's ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be __________ atmosphere. 1 2 0.5 1.5 1 2 0.5 1.5 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20)? A₂B A₂B₃ AB₃ AB₂ A₂B A₂B₃ AB₃ AB₂ ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry For an endothermic reaction, the minimum value of energy of activation will be (where, ΔH = enthalpy of the reaction) >ΔH Δ H >ΔH Δ H ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A reduction process is accompanied with increase in the Number of electrons Neither A nor B Oxidation number Both A & B Number of electrons Neither A nor B Oxidation number Both A & B ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS