Answer: -
HCl (aq) and KOH (aq)
Explanation: -
Neutralization reaction is a type of reaction in which an acid and base react together to give salt and water.
A neutralization reaction is a type of double displacement reaction as well.
So if KCl is the salt that is formed then K should come from one and Cl from another.
Hence KOH and HCl are the acid and base that would neutralize to give KCl.
The answer to your question big man would be E
Balanced equation: 2AgNO₃(aq) + K₂SO₄(aq) ----> Ag₂SO₄(s) + 2KNO₃(aq)
ionic: 2Ag⁺¹(aq) + 2NO₃⁻¹(aq) + 2K⁺¹(aq) + SO₄⁻²(aq) ---> Ag₂SO₄(s) + 2K⁺¹(aq) + 2NO₃⁻¹(aq)
net ionic equation: 2Ag⁺¹(aq) + SO₄⁻²(aq) ----> Ag₂SO₄(s)
The answer is D it say the amount of substance