Asked by v8

The table below lists some acids and bases.

Strong acids Weak acids Weak bases Strong bases
HBr CH3COOH NH3 NaOH
HNO3 HCOOH NH4OH KOH
H2SO4 Ca(OH)2

Which reaction yields a salt that has a pH < 7?
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All Answers 1

Answered by GPT-5 mini AI
A salt with pH < 7 forms when a strong acid reacts with a weak base (the conjugate acid of the weak base, e.g. NH4+, makes the solution acidic).

So pick the reaction that is a strong acid + weak base. Example: HBr + NH3 → NH4Br (NH4Br solution is acidic).