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Lemon juice has a pH that is less than 7 - Junior Cycle Science - Question f(i) - 2016

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Question f(i)

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Lemon juice has a pH that is less than 7. (i) Describe how a student could find the pH of lemon juice. __________________________________________________ _________... show full transcript

Worked Solution & Example Answer:Lemon juice has a pH that is less than 7 - Junior Cycle Science - Question f(i) - 2016

Step 1

Describe how a student could find the pH of lemon juice.

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Answer

To find the pH of lemon juice, the student can use a pH meter or universal indicator paper. First, they should take a small sample of the lemon juice. If using pH paper, they should dip a strip into the juice and then compare the colour change to a pH colour chart to determine the pH value. If using a pH meter, they should insert the electrode into the sample and read the pH directly from the display.

Step 2

Name one material or substance which could neutralise lemon juice.

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Answer

A suitable substance to neutralise lemon juice is sodium hydroxide (NaOH) or baking soda (sodium bicarbonate). These are alkaline substances that can counteract the acidity of the lemon juice.

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