A student carried out an experiment to investigate the reaction between an acid and a base - Junior Cycle Science - Question 6 - 2019
Question 6
A student carried out an experiment to investigate the reaction between an acid and a base.
A pH indicator and a thermometer were used to monitor changes in pH and ... show full transcript
Worked Solution & Example Answer:A student carried out an experiment to investigate the reaction between an acid and a base - Junior Cycle Science - Question 6 - 2019
Step 1
Name a pH indicator the student could have used during this investigation.
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Answer
The student could have used methyl orange as a pH indicator. Another option could be litmus or a universal indicator, which would indicate the acidity or alkalinity of the solution.
Step 2
What colour is this indicator when placed in acid?
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Answer
When placed in an acid, methyl orange changes to a red colour. Other indicators like litmus would also turn red in acidic conditions, reflecting the pH level.
Step 3
When an acid and a base react, they neutralise each other to produce a neutral solution. On the pH scale, what number represents a neutral solution?
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Answer
On the pH scale, the number that represents a neutral solution is seven. This indicates that the solution is neither acidic nor basic.
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