In an experiment, powdered calcium hydroxide was added to dilute hydrochloric acid and the pH was measured - Edexcel - GCSE Chemistry Combined Science - Question 5 - 2023 - Paper 1
Question 5
In an experiment, powdered calcium hydroxide was added to dilute hydrochloric acid and the pH was measured.
The method used was
step 1 measure 200 cm³ dilute hydro... show full transcript
Worked Solution & Example Answer:In an experiment, powdered calcium hydroxide was added to dilute hydrochloric acid and the pH was measured - Edexcel - GCSE Chemistry Combined Science - Question 5 - 2023 - Paper 1
Step 1
State what should be done after step 2 to make sure that any reaction is complete.
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Answer
After step 2, the mixture should be stirred or swirled to ensure that the powdered calcium hydroxide fully interacts with the dilute hydrochloric acid. This mixing is essential to allow the reaction to proceed completely.
Step 2
Complete the word equation for the reaction.
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Answer
calcium hydroxide + hydrochloric acid → calcium chloride + water
Step 3
Which row of the table shows the state symbols for powdered calcium hydroxide and dilute hydrochloric acid in the balanced chemical equation?
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Answer
C: powdered calcium hydroxide is a solid (s) and dilute hydrochloric acid is aqueous (aq).
