Respuesta :
Answer:
11.34 grams of nitrogen monoxide can be formed.
The limiting reactant is O2. N2 is in excess. There will remain 4.56 grams N2.
Explanation:
Step 1: Data given
Mass of nitrogen gas = 9.86 grams
Molar mass of nitrogen gas (N2) = 28.0 g/mol
Mass of oxygen gas (O2) = 6.06 grams
Molar mass O2 = 32.0 g/mol
Step 2: The balanced equation
nitrogen(g) + oxygen(g) → nitrogen monoxide(g)
N2(g) + O2(g) → 2NO(g)
Step 3: Calculate moles
Moles = mass / molar mass
Moles N2 = 9.86 grams / 28.0 g/mol
Moles N2 = 0.352 moles
Moles O2 = 6.06 grams / 32.0 g/mol
Moles O2 = 0.189 moles
Step 4: Calculate the limiting reactant
For 1 mol N2 we need 1 moles O2 to produce 2 moles NO
O2 is the limiting reactant. It will completely be consumed (0.189 moles).
N2 is in excess. There will react 0.189 moles
There will remain 0.352 - 0.189 = 0.163 moles
Step 5: Calculate mass of excess
Mass N2 = 0.163 moles * 28.0 g/mol
Mass N2 = 4.56 grams
Step 6: Calculate moles NO
For 1 mol N2 we need 1 mol O2 to produce 2 moles NO
For 0.189 moles O2 we'll have 2* 0.189 = 0.378 moles NO
Step 7: Calculate mass NO
Mass NO = moles NO * molar mass NO
Mass NO = 0.378 moles * 30.01 g/mol
Mass NO = 11.34 grams
11.34 grams of nitrogen monoxide can be formed.
The limiting reactant is O2. N2 is in excess. There will remain 4.56 grams N2.