Which of the following aqueous solutions will have a pH of less than 7.0 ? 
(a) \(\mathrm{NH}_4 \mathrm{NO}_3\) 
(b) \(\mathrm{NaOH}\)
(c) \(\mathrm{FeCl}_3\)
(d) \(\mathrm{Na}_3 \mathrm{PO}_4\)
Choose the correct option:
1. (a), (b) and (c)
2. (b) and (d)
3. (a) and (c)
4. None of the above.
Subtopic:  Acids & Bases - Definitions & Classification | Salt Hydrolysis & Titration |
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Level 1: 80%+
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