SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In the chemical reaction iron plus oxygen
A
iron oxide is a reactant
B
iron is a reactant
C
oxygen is a product
D
iron is a product
Explanation: 

Detailed explanation-1: -Let’s return to the chemical reaction in which iron (Fe) combines with oxygen (O2) to form rust, or iron oxide (Fe2O3). The equation for this reaction is: 4Fe+ 3O2 → 2Fe2O. This equation illustrates the use of coefficients to balance chemical equations.

Detailed explanation-2: -Fe is the reactant and Fe2O3 F e 2 O 3 is the product.

Detailed explanation-3: -Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Iron and steel rust when they come into contact with water and oxygen – both are needed for rusting to occur.

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