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2 votes
Sodium hydroxide (NaOH) and elemental sodium (Na)

acetic acid (CH3CO2H) and hydrochloric acid (HCl)

acetic acid (CH3CO2H) and ammonia (NH3)

ammonia (NH3) and ammonium chloride (NH4Cl)

1 Answer

4 votes

Answer:

If the question is which can make a buffer, then NH3, NH4Cl should be correct. Because Ammonium (NH4) is conjugate acid of NH3 so they can form an equilibrium which is basically a buffer whose purpose is to resist pH change.

Step-by-step explanation:

answered
User Kanivel
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