Question

_____ + NaOH → NaCl + H₂O

MgCl₂
CaOCl₂
HCl
KCl

Answer 1

Answer:

HCL is the required answer

Answer 2

Answer:

HCl

Explanation:

because in the right side given NaCl + H↓2O

and left side __+ NaOH.

I think you know that after a chemical reaction the elements weight is equal than before reaction.

right side and left side Na , O, H(¹) are present but Cl and H(²) are absent. so we will add Cl+H = HCl

Hence our answer is HCl.

(¹) and (²) after the reaction given H↓2 (two hydrogen atom)and before action given H (a single hydrogen atom), so we will add one more hydrogen atom to make H↓2.

hope it helps.