13) A 0.0035 M aqueous solution of a particular compound has pOH 11.54. The compound is...

Question

Question

13) A 0.0035 M aqueous solution of a particular compound has pOH 11.54. The compound is a) a weak base b) a weak acid c) a st

Answer 1

Answer #1

Ans 13 : d) a strong acid

pH = 14 - pOH

= 14 - 11.54

= 2.46

pH is less than 7 , so its an acid

pH = -log [H3O+]

here concentration = 0.0035 , lets assume its an acid , so [H3O+] = 0.0035

pH = -log (0.0035)

= 2.46

pH is exactly as we calculated so its a strong acid.

Answer 2

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