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Ammonium phosphate and ammonium sulfate are made from ammonia - Edexcel - GCSE Chemistry Combined Science - Question 2 - 2016 - Paper 1
Question 2
Ammonium phosphate and ammonium sulfate are made from ammonia. These compounds can be used as fertilisers. (a) Ammonia solution is alkaline. Which of the followin... show full transcript
Worked Solution & Example Answer:Ammonium phosphate and ammonium sulfate are made from ammonia - Edexcel - GCSE Chemistry Combined Science - Question 2 - 2016 - Paper 1
Step 1
Which of the following could be used to show that ammonia solution is alkaline?
Answer
The most suitable option to show that ammonia solution is alkaline is B pH meter. A pH meter is specifically designed to measure the pH level of a solution, allowing it to accurately indicate whether the solution is acidic, neutral, or alkaline.
Step 2
Give one advantage of using fertilisers made from ammonia rather than using manure.
Answer
One advantage of using fertilisers made from ammonia is that they provide a more concentrated source of nutrients, allowing for more efficient nutrient delivery to plants as compared to manure, which may contain variable nutrient levels and organic materials.
Step 3
Step 4
Step 5
Describe how pure, dry crystals of ammonium phosphate are obtained from the ammonium phosphate solution.
Answer
To obtain pure, dry crystals of ammonium phosphate from the solution, follow these steps:
- Heat the ammonium phosphate solution to evaporate the water, concentrating the solution.
- Once a significant amount of water has evaporated, allow the remaining solution to cool, promoting the crystallization process.
- Filter the mixture to separate the solid ammonium phosphate crystals from the remaining solution.
- Finally, dry the collected crystals using filter paper or by placing them in a warm, dry environment.