Ill give medal
An industrial process involves reacting nitrogen gas (N2) and hydrogen gas (H2) to produce ammonia (NH3). What type of reaction is this?
(2 points)
A: decomposition reaction
B: double-replacement reaction
C: single-replacement reaction
D: synthesis reaction

Question

Ill give medal
An industrial process involves reacting nitrogen gas (N2) and hydrogen gas (H2) to produce ammonia (NH3). What type of reaction is this?
 (2 points)
 A: decomposition reaction
 B: double-replacement reaction
 C: single-replacement reaction
 D: synthesis reaction

anonymous · Answer

B and C are incorrect because only one compound is formed in hydrogen and nitrogen reaction. The double replacement reaction looks like this AX + BY-> AY + BX so you can see the elements or ions have been exchanged and single replacement reaction looks like XY + A-> AX + Y. 
A is not correct either because a compound absorbs heat energy to be broken down down in to two smaller compounds in decomposition reaction.
 We're left with D option.

anonymous · Answer

Yes! @rosestella is correct! :)