Which of the following statements is/arecorrect

Options

A. `Fe` is the limiting reagent.
B. The mass `O_(2)` left over at the end of the reaction is `1.2 g`
C. The mass of `Fe_(2)O_(3)` produced is `12.0g`
D. `O_(2)` is the limiting reagent.

Answer

A, B, C

Explanation

Mole of `O_(2) = (4.8)/(32) = 0.15 "mol" O_(2)`
Moles of `Fe` required `= (4 "mol" Fe)/(3 "mol" O_(2)) xx 0.15 = 0.2 "mol"`
Given mol of `Fe = 0.15`. Hence `Fe` is the limiting reagent and no `Fe` will remain after the reaction.
b. Weight of `O_(2)` required `= (0.15 "mol" Fe)`
`((3 "mol" O_(2))/(4 "mol" Fe))((32 g O_(2))/("mol" O_(2)))`
`= (0.15 xx 3 xx 32)/(4)`
`= 3.6 g O_(2)` required
Weight of `O_(2)` in excess `= (4.8 g O_(2)` present) `- (3.6 g O_(2)` required)
c. weight of `Fe_(2)O_(3)` produced `= (0.15 "mol" Fe)`
`((2 "mol" Fe_(2) O_(3))/(2 "mol" Fe))((160 g Fe_(2) O_(3))/("mol"Fe_(2) O_(3)))`
`= (0.15 xx 2 xx 160)/(4)`
`= 12.0 g Fe_(2) O_(3)` produced
d. `O_(2)` is not the limiting reagent.