Question

1.0 g of magnesium is burnt with 0.56 g O2 in a closed vessel. Which reactant is left in excess and how much ?
(At. wt. Mg = 24 ; O = 16)
(1) Mg, 0.16 g (2) O2, 0.16 g
(3) Mg, 0.44 g (4) O2, 0.28 g

Answer 1

Answer:

Answer:The reaction only ends after all the oxygen available is over. Thus, when 1.0 g of magnesium is burnt with 0.56 g O2 in a closed vessel, 0.16 g magnesium is left in excess. So, the correct answer is “Option A”.