Season4Ever
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In the reaction _____ H2+N2 --> 2 NH3,
what coefficient should be placed in front of H2 to balance the reaction?
1.
2.
3.
No coefficient is needed.

Respuesta :

stariou
A 3 should be placed in front of the H2 to balance it, since the 2 in front of NH3 says there are 6 H atoms. However on the other side, there are only 2. If we add the 3, 3 x 2 = 6. Then it is balanced.

Explanation:

A balanced equation is defined as the equation which contains same number of atoms on both reactant and product side.

For example, [tex]H_{2} + N_{2} \rightarrow 2NH_{3}[/tex]

Number of atoms on reactant side are as follows.

  • H = 2
  • N = 2

Number of atoms on product side are as follows.

  • H = 6
  • N = 2

Therefore, balance this equation by multiplying [tex]H_{2}[/tex] by 3 on reactant side.

Hence, the balanced equation is as follows.

           [tex]3H_{2} + N_{2} \rightarrow 2NH_{3}[/tex]

Thus, we can conclude that a coefficient 3 should be placed in front of [tex]H_{2}[/tex] to balance the reaction.

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