Question

The Thermit reaction is given as: 2Al (s) + Cr2O3(s) →2Cr(s) + Al2O3(s). Calculate the
percentage yield when 180 g of chromium are obtained from a reaction between 100 g of
aluminium and 400 g of chromium (III) oxide.

Answer 1

Answer:

In the Thermit reaction, 2Al(s) + Cr2O; (s) — 2Cr (s) + A1:0(s) a) What is the mass of chromium(III) oxide needed to produce 150 kg of chromium? b) What will be the corresponding mass of Al O, formed in (a)? c) Calculate the percentage yield when 180 g of chromium are obtained from a reaction between 100 g of aluminum and 400 g of chromium.