Answers When calcium oxide is heated with carbon, the oxide will When calcium oxide is heated with carbon, the oxide will A. be converted to carbide B. be converted… Read More
Answers 5SO2(g) + 2KMnO4(aq) + 2H2O(l) → K2SO4 + 2MnSO4(aq) + 2H2SO4(aq) In the reaction above,… 5SO2(g) + 2KMnO4(aq) + 2H2O(l) → K2SO4 + 2MnSO4(aq) + 2H2SO4(aq) In the reaction above, the products give… Read More
Answers If the heat of combustion of hydrogen is -285.8kJ, What is the heat of formation… If the heat of combustion of hydrogen is -285.8kJ, What is the heat of formation of water? A.… Read More
Answers In the electrolysis of CuSO4(g) using platinum electrodes, the reaction at the anode is In the electrolysis of CuSO4(g) using platinum electrodes, the reaction at the anode is A. 4H+ + 4e–… Read More
Answers Na2CO3(g) + 2HCl(aq) → 2NaCl(aq) + H2O(l) + CO2(g) How many moles of sodium trioxocarbonate… Na2CO3(g) + 2HCl(aq) → 2NaCl(aq) + H2O(l) + CO2(g) How many moles of sodium trioxocarbonate (IV) are there… Read More
Answers The solution that will conduct the highest amount of electricity is The solution that will conduct the highest amount of electricity is A. 0.5 mol dm-3 of hydrochloric acid… Read More
Answers In which of the following is the oxidation number of sulphur equal to -2? In which of the following is the oxidation number of sulphur equal to -2? A. SO3 B. S8… Read More
Answers H2(g) + Br2(g) → 2HBr(g) The above reaction is carried out at 25oC. ΔH is… H2(g) + Br2(g) → 2HBr(g) The above reaction is carried out at 25oC. ΔH is -72 kJ mol-1… Read More
Answers Zinc and carbon rods are used as anode and cathode respectively in a Zinc and carbon rods are used as anode and cathode respectively in a A. Leclanche cell B. lead… Read More
Answers Trioxonitrate (V) acid is not used for preparing hydrogen gas from metals because it Trioxonitrate (V) acid is not used for preparing hydrogen gas from metals because it A. is strongly oxidizing… Read More