Answer:
The mole fraction of acetyl bromide is 0.535
Explanation:
Step 1: Data given
Mass of acetyl bromide = 127 grams
Mass of heptane = 90 grams
Molar mass of acetyl bromide = 122.95 g/mol
Molar mass of heptane = 100.21 g/mol
Step 2: Calculate moles acetyl bromide
Moles acetyl bromide = mass acetyl bromide / molar mass acetyl bromide
Moles acetyl bromide = 127.0 grams / 122.95 g/mol
Moles acetyl bromide = 1.033 moles
Step 3: Calculate moles heptane
Moles heptane = 90.0 grams / 100.21 g/mol
Moles heptane = 0.898 moles
Step 4: Calculate Total moles
Total moles = moles acetyl bromide + moles heptane
Total moles = 1.033 moles + 0.898 moles
Total moles = 1.931 moles
Step 5: Calculate the mole fraction of acetyl bromide
Mole fraction acetyl bromide =1.033 moles / 1.931 moles
Mole fraction acetyl bromide = 0.535
The mole fraction of acetyl bromide is 0.535
