Chemistry Past Questions and Answers

2MnO<sup style='font-size: smaller;'>-</sup><sub style='font-size: smaller;'>4</sub> + 10Cl<sup style='font-size: smaller;'>-</sup> + 16H<sup style='font-size: smaller;'>+</sup> → 2Mn<sup style='font-size: smaller;'>2+</sup> + 5Cl<sub style='font-size: smaller;'>2</sub> + 8H<sub style='font-size: smaller;'>2</sub>O. Which of the substances serves as an oxidizing agent?

Which of the following metals will displace iron from a solution of iron(ll)tetraoxosulphate(lV)?

In the reaction H<sub style='font-size: smaller;'>2(g)</sub>O \(\to\) H<sub style='font-size: smaller;'>2(g)</sub> + 1/2O<sub style='font-size: smaller;'>2(g)</sub><br/>ΔH = -2436000 KJ, which of the following has no effect on the equilibrium position?

Complete hydrogenation of ethyne yields?

Which of the following is used in the manufacture of bleaching powder?