Chemistry Past Questions and Answers

20 cm<sup style='font-size: smaller;'>3</sup> of 1.0 molar NH<sub style='font-size: smaller;'>4</sub>OH solution when neutralized with 20.05cm<sup style='font-size: smaller;'>3</sup> of 0.1 molar HCl liberated -102 joules of heat. Calculate the heat of neutralization of NH<sub style='font-size: smaller;'>4</sub>OH?

What is the consequences of increasing pressure on the equilibrium reaction ZnO<sub style='font-size: smaller;'>(s)</sub> + H<sub style='font-size: smaller;'>2(g)</sub> Zn<sub style='font-size: smaller;'>(s)</sub> + H<sub style='font-size: smaller;'>2</sub>O<sub style='font-size: smaller;'>(I)</sub>?

The approximate volume of air containing 10cm<sup style='font-size: smaller;'>3</sup> of oxygen is?

The reaction Mg + H<sub style='font-size: smaller;'>2</sub>O → MgO + H<sub style='font-size: smaller;'>2</sub> takes place only in the presence of?

When steam is passed through red hot carbon, which of the following are produced?