Question

In this equation, stands for carbon, stands for nitrogen, and stands for oxygen. Which equation represents this reaction?

A.) 2CO + 2NO → 2CN2 + O2

B.) CO + NO → 2CO2 + 2N2

C.)2CO2 + 2NO → CO2 + N2

D.)2CO + 2NO → 2CO2 + N2

E.)2CO + 2NO → 2CN2 + O2

Answer 1

So, grey is for carbon, red is for oxygen and blue is for nitrogen.
From the color code and the equation shown in the picture, choices A and E are excluded because the output in these equations is oxygen gas not nitrogen gas.

Again from the picture we find that:
The inputs are: 2 carbon dioxide and 2 nitrogen oxide (2CO2 + 2NO)
The outputs are: 2 carbon dioxide and 1 nitrogen molecule (2CO2 + N2)

Combining the inputs and outputs, the following equation is formed:
2CO2 + 2NO ........> 2CO2 + N2

Comparing the formed equation with the choices, we find that the correct choice is D

Answer 2

Answer:

D.) 2CO + 2NO → 2CO2 + N2

Explanation: