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This question is about chemical analysis - AQA - GCSE Chemistry - Question 7 - 2015 - Paper 3
Question 7
This question is about chemical analysis. A student has solutions of three compounds, X, Y and Z. The student uses tests to identify the ions in the three compound... show full transcript
Worked Solution & Example Answer:This question is about chemical analysis - AQA - GCSE Chemistry - Question 7 - 2015 - Paper 3
Step 1
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Step 4
Compare the advantages and disadvantages of the methods in 7 (b)
Answer
Method 1
- Advantages:
- Weighing is accurate.
- Can confirm the production of a solid precipitate.
- Disadvantages:
- Not all barium sulfate may be precipitated.
- Precipitate may be lost during filtration.
- The precipitate may not be dry, affecting mass.
- Process is time-consuming and requires energy.
Method 2
- Advantages:
- More accurate results can be achieved.
- Effective for lower concentrations.
- Disadvantages:
- Accuracy depends on the precise measurement of titrant and endpoints.