In which 0.01 M solution is phenolphthalein pink?
(1) CH3OH(aq) (3) CH3COOH(aq)
(2) Ca(OH)2(aq) (4) HNO3(aq)

Phenolphthalein is chemical compount. It becomes colorless when it is immersed in acidic solution and pink when immersed in basic solution.

(1) CH3OH(aq) - Methanol. It is a weak acid but has basic properties too.
(3) CH3COOH(aq) - hydrated acetic acid
(2) Ca(OH)2(aq) - Calcium hydroxide or lime water. Basic solution
(4) HNO3(aq) - Nitric acid

Phenolpthalein becomes pink in 0.01M of 2) Ca(OH)2(aq) solution.

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In which 0.01 M solution is phenolphthalein pink? (1) CH3OH(aq) (3) CH3COOH(aq) (2) Ca(OH)2(aq) (4) HNO3(aq)

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In which 0.01 M solution is phenolphthalein pink?
(1) CH3OH(aq) (3) CH3COOH(aq)
(2) Ca(OH)2(aq) (4) HNO3(aq)