Question

Which chemical equation represents the balanced, double displacement

reaction between Hydrochloric Acid (HCI) and Sodium Hydroxide (NaOH)?
OHCl + NaOH --> H₂ + O₂ + NaCl
O2HCl + 2NaOH -> 2H₂ + O₂ + 2NaCl
OHCI + NaOH --> H₂O + NaCl
2HCI + NaOH --> 2H₂O + NaCl

Answer 1

Answer: 2HCl + 2NaOH → 2H₂O + 2NaCl

Explanation: This equation represents the formation of water (H₂O) and sodium chloride (NaCl) when hydrochloric acid and sodium hydroxide react. The equation is balanced because it has the same number of atoms of each element on both sides of the reaction arrow.