Reactions of the Halogens Flashcards

All 4 cards in this deck

What is the chemical test for chlorine gas, and the result?

Hold damp blue litmus paper in the gas: it first turns red, then is bleached white.

What type of compound is formed when a halogen reacts with a metal?
e.g. burning sodium lowered into a gas jar of chlorine

A metal halide — sodium chloride (NaCl), seen as white crystals.

What is the balanced equation for the reaction between aluminium and chlorine?

$2Al + 3Cl_2 \rightarrow 2AlCl_3$

What is formed when a hydrogen halide dissolves in water?

An acidic solution.
e.g. hydrogen chloride dissolves to form hydrochloric acid.