GCSE / O Levels Chemistry

Four gas jars each contain one of the gases ammonia, chlorine, hydrogen chloride and oxygen. A
strip of damp blue litmus paper and a strip of damp red litmus paper are placed in each jar.
In which gas jar will both the damp blue litmus paper and the damp red litmus paper change
colour?
A
B
ammonia
-chlorine
red-
-blue
red
-blue
litmus
litmus
litmus
litmus
D
hydrogen
chloride
- oxygen
red
-blue
red
-blue
litmus
litmus
litmus
litmus


Identification of Ions and Gases, The Characteristic Properties of Acids and Bases | 2016 - M/J - 5070/11 | Q2