( a )Circle the stronger acid is the following pair: Benzoic acid(HC7H5O2) or Fo
ID: 680335 • Letter: #
Question
(a)Circle the stronger acid is the following pair: Benzoic acid(HC7H5O2) or Formic acid (HCHO2)
(b)Circle the stronger base: C7H5O2 or CHO2
(c)Predict whether an aqueous solution of Fe(NO3)3 iseither: Acidic or Basicor Neutral
(d)Predict whether an aqueous solution of NH4CN iseither: Acidic or Basic or Neutral
(e)Predict whether an aqueous solution of NH4ClO4is either: Acidic or Basic orNeutral
(f)Predict whether an aqueous solution of Na2CO3is either: Acidic or Basicor Neutral
Explanation / Answer
a) Formic, because it's Ka is higher. b) C7H5O2 becauseCHO2- is conjugate of a strong acid c) NO3 is conjugate of a strong acid, therefore it is a weak base.Fe is conjugate of weak base, therefore it is a strong acid.Acidic. d) CN- is conjugate of a weak acid, therefore it is a strong base.NH4 is conjugate of a weak base, therefore it is astrong acid. Neutral. e) NH4 is conjugate of weak base, therefore it is astrong acid. ClO4 is conjugate of a strong acid,therefore it is a weak base. Acidic. f) Na is conjugate of a strong base, therefore it is a weak acid.CO3 is conjugate of a weak acid, therefore it is a strong base.Basic. Hope that helps. Let me know if I made a mistake.
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