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Universal Indicator

Question 9dFi...

Question

Question 9(d)
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
(d) weakly acidic?

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Solution

Lower the pH, more acidic is the solution.
Therefore, solution A with pH 4 is weakly acidic.

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Q. Question 9(e)
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
(e) weakly alkaline?

Q. Five solutions

A, B, C, D

E

when tested with universal indicator showed pH as

4, 1, 11, 7

9

, respectively. Which solution is:

(b) strongly alkaline?
(c) strongly acidic?
(d) weakly acidic?
(e) weakly alkaline?

Arrange the pH in increasing order of hydrogen-ion concentration.

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