Chemistry 5070/41 — May/June 2010
Cambridge O-Level · Alternative to Practical · worked solutions for every part, with the mark scheme
10
questions
60
marks
60
minutes
Topics Experimental Contexts · Analysis, Conclusions and Evaluation · Observations and Measurements · Qualitative Analysis
Q15MQualitative AnalysisFree sample
A student was given two test-tubes, one containing aqueous ammonia; the other aqueous copper(II) sulfate.
(a)1M
A few drops of litmus solution were added to aqueous ammonia.
What colour is litmus solution in aqueous ammonia?
______
(b)1M
What colour is aqueous copper(II) sulfate?
______
(c)
What observations were made when
(i)1M
a few drops of aqueous ammonia were added to aqueous copper(II) sulfate,
______
(ii)2M
an excess of aqueous ammonia was added to the solution from (i)?
______
The rest of this paper
9 more questions- Q2Experimental Contexts8M
- Q3Experimental Contexts9M
- Q4Experimental Contexts1M
- Q5Experimental Contexts1M
- Q6Experimental Contexts1M
- Q7Experimental Contexts · Analysis, Conclusions and Evaluation2M
- Q8Experimental Contexts · Observations and Measurements · Analysis, Conclusions and Evaluation13M
- Q9Qualitative Analysis · Observations and Measurements9M
- Q10Experimental Contexts · Observations and Measurements · Analysis, Conclusions and Evaluation11M
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