Chemistry Past Questions and Answers

A sample of orange juice is found to have a pH of 3.80. What is he concentration of the hydroxide ion in the juice?

Arrange HCI, CH<sub style='font-size: smaller;'>3</sub>COOH, C<sub style='font-size: smaller;'>6</sub>H<sub style='font-size: smaller;'>5</sub>CH<sub style='font-size: smaller;'>3</sub> in order of increasing conductivity.

How many grams of H<sub style='font-size: smaller;'>2</sub>SO<sub style='font-size: smaller;'>4</sub> are necessary for the preparation of 0.175 dm<sup style='font-size: smaller;'>3</sup> of M 6.00 M H<sub style='font-size: smaller;'>2</sub>SO<sub style='font-size: smaller;'>4</sub>?<br/>(S = 32.06, O = 16.00 H = 1.00)

Copper (II) tetraoxosulphate (VI) solution is electrolyzed using carbon electrodes. Which of the following are produced at the anode and cathode respectively ?

Calculate the mass, in kilograms, of magnesium produced by the electrolysis of magnesium (II) chloride in a cell operating for 24 hours at 500 amperes.