Sodium hydroxide (NaOH) and hydrochloric acid (HCl) combine to make table salt (NaCl) and water (H2O). Which equation is balanced?(1 point)

Question

Responses

NaOH + 2HCl → NaCl + H2O
NaOH + 2HCl → NaCl + H 2 O

NaOH + HCl → NaCl + H2O
NaOH + HCl → NaCl + H 2 O

2NaOH + HCl → NaCl + H2O
2NaOH + HCl → NaCl + H 2 O

2NaOH + 2HCl → 2NaCl + H2O
2NaOH + 2HCl → 2NaCl + H 2 O

Answer 1

To determine which equation is balanced, we need to check if both sides of the equation have the same number of each type of atom.

The reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl) produces sodium chloride (NaCl) and water (H2O). Let's analyze the provided equations:

1. NaOH + 2HCl → NaCl + H2O

   • Left: 1 Na, 2 Cl, 1 O, 1 H
   • Right: 1 Na, 1 Cl, 1 O, 2 H
   • Not balanced

2. NaOH + 2HCl → NaCl + H 2 O

   • Same as above, just a space in H2O.
   • Not balanced

3. NaOH + HCl → NaCl + H2O

   • Left: 1 Na, 1 Cl, 1 O, 2 H
   • Right: 1 Na, 1 Cl, 1 O, 2 H
   • Balanced

4. NaOH + HCl → NaCl + H 2 O

   • Same as above, just a space in H2O.
   • Balanced

5. 2NaOH + HCl → NaCl + H2O

   • Left: 2 Na, 1 Cl, 1 O, 2 H
   • Right: 1 Na, 1 Cl, 1 O, 2 H
   • Not balanced

6. 2NaOH + HCl → NaCl + H 2 O

   • Same as above, just a space in H2O.
   • Not balanced

7. 2NaOH + 2HCl → 2NaCl + H2O

   • Left: 2 Na, 2 Cl, 2 O, 4 H
   • Right: 2 Na, 2 Cl, 1 O, 2 H
   • Not balanced

8. 2NaOH + 2HCl → 2NaCl + H 2 O

   • Same as above, just a space in H2O.
   • Not balanced

Based on this analysis, the balanced equations are:

• NaOH + HCl → NaCl + H2O
• NaOH + HCl → NaCl + H 2 O

These are the balanced equations for the reaction between sodium hydroxide and hydrochloric acid.