Balanced Reactions Quick Check

Question

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Question
Use the equation to answer the question.

CH4 + _____Cl2 → CCl4 + _____HCl

Which numbers balance this equation?

(1 point)
Responses

3, 2
3, 2

4, 4
4, 4

1, 2
1, 2

2, 4

Answer 1

To balance the reaction:

CH₄ + _____Cl₂ → CCl₄ + _____HCl

Let's analyze it:

On the left side, we have:

• 1 carbon (C) from CH₄
• 4 hydrogens (H) from CH₄
• The amount of Cl will need to be determined.

On the right side, we have:

• 1 carbon in CCl₄
• 4 chlorine (Cl) in CCl₄
• 1 hydrogen (H) in HCl

To balance:

1. Carbon (C) is balanced with 1 carbon on each side.
2. For chlorine (Cl), we have 4 from CCl₄ on the right and need 4 from Cl₂ on the left, which gives us 2 Cl₂.
3. For hydrogen (H), we have 4 from the left in CH₄ and need 4 from HCl, which is 4 HCl.

Thus, the complete balanced equation is:

CH₄ + 2Cl₂ → CCl₄ + 4HCl

The coefficients needed to balance this equation are: 1 for CH₄, 2 for Cl₂, 1 for CCl₄, and 4 for HCl.

Therefore, the correct response is: 2, 4.