`Fe_2O_3` is heated with `B_2O_3` in (reducing flame)

What happens when:CuO is heated with B_2O_3 in (Oxidation flame)

Mn_(3)O_(4) is heated with aluminimum power

An intimate mixture of Fe_(2)O_(3) and Al_(2)O_(3) is used in solid furl for rockets. Calculates the furl value per gram and fuel value per cm^(3) of the mixture. DeltaH(Fe_(2)O_(3))=1669.4kJ*mol^(-1) DeltaH(Al_(2)O_(3))=832.6kJ*mol^(-1) .

What chemical principle is involved in choosing a reducing agent for getting the metal from its oxide ore? Consider the metle oxides Al_(2)O_(3) and Fe_(2)O_(3) , and justify the choice of the reducing agent.

2 gm of a sample contains mixture of SiO_2 and FE_2O_3 . The sample on very strong heating leave a residue of mass 1.96 gm. The reaction responsible for weight loss is 3Fe_2O_3 rarr 2Fe_3O_4 + 1/2 O_2 What is the percentage by mass of SiO_2 in original mixture

Equivalent mass of Fe_(0.9) O in reaction with acidic K_2Cr_2O_7 is (Fe^(2+) + Cr_2O_7^(2-) + 14H^+ -> 6Fe^(3+) + 2Cr^(3+) + 7H_2O)

Haematite (Fe_(2)O_(3)) contains some water in addition to Fe_(2)O_(3) . 4.0 kg of this mineral contains 2.5 kg of iron. Find the purity of Fe_(2)O_(3) in the mineral.

In the extraction of iron, Fe_(2)O_(3) is reduced with -

Carbon cannot reduce Fe_2O_3 to Fe at a temperature below 983 K because