Question

Most fertilizers contain ammonia (NH3). Ammonia forms when hydrogen reacts with nitrogen. Which equation correctly represents the chemical reaction that forms ammonia?
A. 3H2 + N2 → NH3 
B. H2 + N2 → 2NH3
C. H2 + N2 → NH3
D. 3H2 + N2 → 2NH3

Answer 1

The correct answer is: D. 3H2 + N2 → 2NH3

Ammonia (NH3) is a colourless gas with a characteristic pungent smell with wide use. Ammonia is a common nitrogenous waste, specially among aquatic organisms, and it is a precursor to food and fertilizers to terrestrial organisms. It is used as building block for the synthesis of many pharmaceutical products and cleaning products.

Answer 2

Answer

            The correct option is D.

Explanation with reason

            According to balance chemical equation

A. 3H2 + N2 → NH3

                              in the above reaction there are 6 mole of hydrogen atom and 2 mole of nitrogen atom on reactant side, one mole of nitrogen atom and 3 mole of hydrogen atom on product side. This is not a balance chemical equation.

B. H2 + N2 → 2NH3

                           There are 2 mole of hydrogen atom and 2 mole of nitrogen atom on reactant side and 2 mole of nitrogen and 6 mole of hydrogen atom on product side. This is not a balance chemical equation.

C. H2 + N2 → NH3

                           There are 2 mole of hydrogen as well as nitrogen atom on reactant side and i mole of nitrogen and 3 mole of hydrogen atom on product side. so, this is also not a balance chemical equation.

D. 3H2 + N2 → 2NH3

                               There are 6 mole of hydrogen atom and 2 mole of nitrogen atom on both side. So this is a balance chemical equation.

Conclusion

                   It is concluded from above discussion that D equation correctly represents the chemical reaction that form ammonia.