Answer to Question #120591 in Inorganic Chemistry for Julian Staffieri

Question #120591
8. When nitrogen gas reacts with hydrogen gas, ammonia gas is formed. If 0.95 g of hydrogen gas react with 4.75 g of nitrogen gas, which reactant will be the limiting reactant?
1 point
a. nitrogen gas
b. hydrogen gas
c. ammonia gas
d. Neither will be the limiting reactant.
e. The excess reactant must be determined experimentally.
1
Expert's answer
2020-06-08T15:23:30-0400

The balanced equation is:

3H2 + N2 --> 2NH3

n (H2) = 0.95g / 2.02g/mol = 0.47 mol

n (N2) = 4.75g / 28.02g/mol = 0.17 mol

The actual mole ratio is H2 : N2 = 0.47 : 0.17 = 2.76.

According to the equation, the H2 : N2 ratio equals 3. Therefore, H2 is the limiting reactant.

Answer: b) - Hydrogen gas.


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