Chlorine, bromine, and iodine are elements in Group 7 of the Periodic Table.
Identify which of chlorine, bromine, and iodine has:
Give the name of a Group 7 element, other than chlorine, that is a gas at room temperature and pressure.
When hydrogen and chlorine react together, hydrogen chloride gas forms. Write a chemical equation for this reaction.
Some hydrogen chloride gas is bubbled into separate samples of water and methylbenzene. A piece of blue litmus paper is dipped into each solution. State, with a reason, the final colour of the litmus paper in the solution in water.
State, with a reason, the final colour of the litmus paper in the solution in methylbenzene.
