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30. Which is a product in the following chemical reaction?

[tex]\[ CH_4 + 2 O_2 \rightarrow CO_2 + 2 H_2O \][/tex]

A. [tex]\( O_2 \)[/tex]

B. [tex]\( H_4 \)[/tex]

C. [tex]\( H_2O \)[/tex]

D. [tex]\( CH_4 \)[/tex]


Sagot :

Let's examine the chemical reaction given:

[tex]\[ CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O \][/tex]

To determine which compound is a product from the reaction, we need to identify the substances on both sides of the reaction equation:

- Reactants (substances you start with) are on the left side of the arrow:
- [tex]\( CH_4 \)[/tex] (methane)
- [tex]\( 2O_2 \)[/tex] (oxygen)

- Products (substances you end up with) are on the right side of the arrow:
- [tex]\( CO_2 \)[/tex] (carbon dioxide)
- [tex]\( 2H_2O \)[/tex] (water)

Now, let's match these products with the options given in the question to see which one is listed as a product:

1. [tex]\( O_2 \)[/tex] - This is a reactant, not a product.
2. [tex]\( H_4 \)[/tex] - This does not appear in the reaction at all.
3. [tex]\( H_2O \)[/tex] - This is a product of the reaction.
4. [tex]\( CH_4 \)[/tex] - This is a reactant, not a product.

From these choices, [tex]\( H_2O \)[/tex] (water) is the correct answer because it is one of the products of the reaction.

Therefore, the correct answer is:
[tex]\[ \boxed{3} \][/tex]