SC-1129
pH scale
Lower Sec Science · Secondary 2 · Medium · pH scale
A student measures the pH of two rainwater samples using universal indicator.
Sample X turns the indicator green.
Sample Y turns the indicator red.
What can be concluded about the acidity of the two samples?
Sample X turns the indicator green.
Sample Y turns the indicator red.
What can be concluded about the acidity of the two samples?
- Sample Y is more acidic than sample X
- Sample X is more acidic than sample Y
- Both samples have the same acidity
- Both samples are strongly alkaline
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