Reactions of the Halogens Flashcards

All 4 cards in this deck

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

Damp blue litmus paper first turns red, then is bleached white (goes colourless).

What is the balanced symbol equation for the reaction of sodium with chlorine?

2Na+Cl2→2NaCl2Na + Cl_2 \rightarrow 2NaCl (sodium chloride).

Name a halogen that reacts with hot iron more vigorously than bromine does.

Fluorine (or chlorine) — both are above bromine in group 7, so they are more reactive.

What is formed when a hydrogen halide dissolves in water?

e.g. hydrogen chloride

An acidic solution — hydrogen chloride dissolves to form hydrochloric acid.