A student was given two acids, S and T - Junior Cycle Science - Question 9 - 2022
Question 9
A student was given two acids, S and T. He set up the apparatus shown below to investigate how the pH of S and T changed when they reacted with a base. The diagrams ... show full transcript
Worked Solution & Example Answer:A student was given two acids, S and T - Junior Cycle Science - Question 9 - 2022
Step 1
Which acid, S or T, was more acidic at the start of the investigation?
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Answer
Acid T was more acidic at the start of the investigation, as it has a lower pH reading of 1.00 compared to acid S, which has a pH of 4.00.
Step 2
State one safety precaution the student should have followed when handling the acids.
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One safety precaution the student should have followed is to wear gloves and safety goggles to protect against spills and splashes while handling the acids.
Step 3
What was the pH of the solutions when 50 cm³ of base had been added?
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The pH of the solutions when 50 cm³ of base had been added was 13.
Step 4
What is the pH of a neutral solution?
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The pH of a neutral solution is 7.
Step 5
Identify a laboratory base the student could have used in this investigation.
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The student could have used sodium hydroxide (NaOH), potassium hydroxide (KOH), or calcium hydroxide (Ca(OH)2) as a laboratory base in this investigation.
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