2:44

2:44 describe tests for these gases: hydrogen, oxygen, carbon dioxide, ammonia, chlorine

Tests for gases

Gas	Test	Result if gas present
hydrogen (H₂)	Use a lit splint	Gas pops
oxygen (O₂)	Use a glowing splint	Glowing splint relights
carbon dioxide (CO₂)	Bubble the gas through limewater	Limewater turns cloudy
ammonia (NH₃)	Use red litmus paper	Turns damp red litmus paper blue
chlorine (Cl₂)	Use damp litmus paper	Turns damp litmus paper white (bleaches)

Spec	Q'stion	Ans	MS
2:44	Jan '12 (2), Q 5 a ii	Answer	MkS
2:44	Jan '13 (2), Q 4 b	Answer	MkS
2:44	Jan '14 (1), Q 5 b	Answer	MkS
2:44	Jan '14 (1), Q 8 c i	Answer	MkS
2:44	Jan '15 (1), Q 3 a	Answer	MkS
2:44	Jan '15 (1), Q 3 b iii	Answer	MkS
2:44	Jan '15 (1), Q 6 c i	Answer	MkS
2:44	Jan '16 (1), Q 15 b i	Answer	MkS
2:44	Jan '16 (1), Q 4 b	Answer	MkS
2:44	Jan '16 (2), Q 5 b i	Answer	MkS
2:44	Jan '17 (2), Q 1 b	Answer	MkS
2:44	Jan '17 (2), Q 6 a ii	Answer	MkS
2:44	Jan '18 (1), Q 13 d	Answer	MkS
2:44	May '11 (1), Q 9 b i	Answer	MkS
2:44	May '11 (1), Q 9 b iii	Answer	MkS
2:44	May '12 (1), Q 2 b i	Answer	MkS
2:44	May '12 (1), Q 5 b	Answer	MkS
2:44	May '13 (1R), Q 7 b ii	Answer	MkS
2:44	May '13 (2R), Q 3 a	Answer	MkS
2:44	May '14 (1R), Q 5 b ii	Answer	MkS
2:44	May '15 (1R), Q 8 c	Answer	MkS
2:44	May '15 (2R), Q 4 b	Answer	MkS
2:44	May '16 (2R), Q 3 e i	Answer	MkS
2:44	May '16 (2R), Q 3 e ii	Answer	MkS
2:44	May '16 (2R), Q 4 c	Answer	MkS
2:44	May '17 (1), Q 10 c ii	Answer	MkS
2:44	May '17 (1R), Q 14 b i	Answer	MkS