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Question -

Five solutions A, B, C, D and E when tested with universal indicator showed pH as 4, 1, 11, 7 and 9, respectively. Which solution is



Answer -

(a) neutral?
(b) Strongly alkaline?
(c) Strongly acidic?
(d) Weakly acidic?
(e) Weakly alkaline?

Answer
In increasing order of hydrogen ion concentration:
pH 11(B) -> pH 9(E) -> pH 7(A) -> pH 4(D) -> pH 1 (B)
PH11 – Strongly alkaline
pH9 – weakly alkaline
PH7 – Neutral
pH4 – Weakly acidic
pH1 – Strongly acidic


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