Question

Which of the following balanced chemical equations below best represents the following “word” equation: Nitrogen gas reacts with hydrogen gas to produce ammonia.



N2 + 3H2 --> 2NH3

N + 2H2 --> 2NH

N2 + H2 --> NH3

N2 + 2H --> 2NH3

Answer 1

Answer:

The answer to your question is the first option

Explanation:

According to the "word"equation:

Reactants =   Nitrogen gas = N₂(g)

                      Hydrogen gas = H₂(g)

Products  =    Ammonia =  NH₃

Reaction

                      N₂(g)  +   H₂(g)    ⇒   NH₃

Now, we have to balance it

                     Reactants            Elements           Products

                            2                          N                        1

                             2                         H                        3

This reaction is unbalanced.

Multiply NH₃ by 2 and H₂ by 3

                       

                     N₂(g)  +  3 H₂(g)    ⇒  2 NH₃

Now, we have to balance it

                     Reactants            Elements           Products

                            2                          N                        2

                             6                         H                        6

Now the reaction is balanced