Use the equation to answer the question.(1 point)

Question

4
N
a
C
l
+
2
S
O
2
+
2
H
2
O
+

O
2
→

N
a
2
S
O
4
+
4
H
C
l

Select the numbers from the drop down box that would balance this equation.

Answer 1

To balance the chemical equation given, we need to ensure that the number of atoms for each element is the same on both sides of the equation.

The unbalanced equation is:

\[ 4 , \text{NaCl} + 2 , \text{SO}_2 + 2 , \text{H}_2\text{O} + O_2 → \text{Na}_2\text{SO}_4 + 4 , \text{HCl} \]

We will analyze each component:

Reactants:

• Sodium (Na): 4 (from 4 NaCl)
• Chlorine (Cl): 4 (from 4 NaCl)
• Sulfur (S): 2 (from 2 SO₂)
• Oxygen (O): 2 (from 2 H₂O) + 2 (from O₂) = 4 total
• Hydrogen (H): 4 (from 2 H₂O)

Products:

• Sodium (Na): 2 (from Na₂SO₄)
• Chlorine (Cl): 4 (from 4 HCl)
• Sulfur (S): 1 (from Na₂SO₄)
• Oxygen (O): 4 (from Na₂SO₄) + 4 (from 4 HCl) = 8 total
• Hydrogen (H): 4 (from 4 HCl)

To balance the equation, we see that:

• We have 4 Na and need 2 Na in products, so we need 4 NaCl to provide enough Na.
• We have only 1 S in products and 2 in reactants; we need to balance the sulfur atoms by ensuring the same number on both sides.
• The hydroxide ions and hydrogen need to be balanced with the same number.
• The oxygen atoms should be arranged so that each side balances out.

After reviewing the equation, it seems there is already balance in the Cl and H quantities. However, we have mismatched S and O.

Let's redistribute:

\[ 2 , \text{Na}_2\text{SO}_4 + 4 , \text{NaCl} + 2 , \text{SO}_2 + 2 , \text{H}_2\text{O} + O_2 \rightarrow 2 , \text{Na}_2\text{SO}_4 + 4 , \text{HCl} \text{ should be balanced completely } \]

The numbers to balance this equation will generally be finalized upon applying proper coefficients.

Thus, confirming coefficients:

• Confirm each atom count remains equal before and after, using balanced equations from prior calculations - ensuring that each substance matches the stoichiometric coefficients defined for balanced chemical handling.

The final balanced equation should look something like:

\[ 4 , \text{NaCl} + 2 , \text{SO}_2 + 2 , \text{H}_2\text{O} + O_2 → 2 , \text{Na}_2\text{SO}_4 + 4 , \text{HCl} \]

In the drop-down selections you might need numbers like 4 for NaCl, 2 for SO₂, 2 for H₂O, and O₂ in a way to maintain balance.

As a result, you would choose:

• Sodium (\[4\]), Chlorine (\[4\]), Sulfur (\[2\]), etc to balance the overall equation.