Photo AI
The volume of dilute sulfuric acid required to neutralise 25.0 cm³ of ammonia solution can be found by titration - Edexcel - GCSE Chemistry - Question 7 - 2022 - Paper 1
Question 7
The volume of dilute sulfuric acid required to neutralise 25.0 cm³ of ammonia solution can be found by titration. In the titration, a few drops of methyl orange ind... show full transcript
Worked Solution & Example Answer:The volume of dilute sulfuric acid required to neutralise 25.0 cm³ of ammonia solution can be found by titration - Edexcel - GCSE Chemistry - Question 7 - 2022 - Paper 1
Step 1
Step 2
Step 3
Explain two other practical steps that should be used in the titration to ensure that an accurate titre volume is obtained.
Answer
-
Use a white tile under the flask to clearly observe the colour change that indicates the endpoint.
-
Add the acid from the burette dropwise as the endpoint approaches to avoid overshooting the neutralisation point.
Step 4
Devise a plan to produce a sample of dry ammonium sulfate from the contents of the conical flask.
Answer
-
Filter the solution to remove any insoluble impurities.
-
Concentrate the solution by evaporation until crystals begin to form.
-
Allow the solution to cool to produce dry ammonium sulfate crystals, then filter and dry further if necessary.