Answer:
0.19 moles of NO₂ are needed.
Explanation:
Given data:
Mass of hydrogen = 1.32 g
Moles of NO₂ needed to react = ?
Solution:
Chemical equation:
2NO₂ + 7H₂ → 2NH₃+ 4H₂O
Number of moles of hydrogen:
Number of moles = mass/molar mass
Number of moles = 1.32 g/ 2 g/mol
Number o moles = 0.66 mol
Now we will compare the moles of hydrogen and nitrogen dioxide.
H₂ : NO₂
7 : 2
0.66 : 2/7×0.66 =0.19
0.19 moles of NO₂ are needed.
