A Level Chemistry 9701/11/O/N/20 Q36


Three test-tubes, X, Y and Z, each contain water.

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After a short time, two drops of universal indicator solution are added to each test-tube.
Which statements can be correct?
1 The pH in test-tube X is 7.
2 The pH in test-tube Y is 2.
3 The pH in test-tube Z is 2.

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