Virtual CrezLab - Qualitative Analysis - The Laboratory Challenge

PERFORMANCE LABORATORY

The Laboratory Challenge

Lab Challenge 2

Modified GCE `O' Level Chemistry Practical

Observe the following demo experiment on solution T and record your observations in the table given. You should identify and name any gas evolved.

Test	Play Video	Observations
1a) To a portion of solution T, add aqueous sodium hydroxide until a change is seen. 1b) Add excess aqueous sodium hydroxide to the mixture from (a)	View experiment	1a) Ask the expert 1b) Ask the expert
2a) To a portion of solution T, add aqueous ammonia until a change is seen. 2b) Add excess aqueous ammonia to the mixture from (a)	View experiment	2a) Ask the expert 2b) Ask the expert
3a) To a portion of solution T, add aqueous silver nitrate. b) Add aqueous ammonia to the mixture from (a). c) To a portion of the mixture from (b), add dilute nitric acid.	View experiment 3a View experiment 3b View experiment 3c	3a) Ask the expert 3b) Ask the expert 3c) Ask the expert
4) To a portion of solution T, add an equal volume of aqueous sodium hydrogen carbonate.	View experiment	4) Ask the expert

Conclusions

The formula of the anion present in solution T is

The formula of the cation present in solution T are

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