Question

Answer The Following Question:

Complete the following reactions:

$1. \: fe + o2 + h2o \: \: \: - >$
$2. \: mg \: + \: o2 \: \: \: - >$
$3. \: al + o2 \: \: \: - >$
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Answer 1

Answer:

We must remember that when iron reacts with oxygen and water, iron oxide is formed. This iron oxide is commonly known as rust and the process is known as rusting. The equation is given below:

Fe+O2+H2O→Fe2O3. The product is Fe2O3 which is chemically known as iron (III) oxide and commonly known as rust.

The balanced chemical equation for the formation of rust is as follows:

2Fe+O2+H2O→Fe2O3+H2

2 moles of iron react with one molecule of oxygen and one molecule of water to produce one molecule of iron oxide with the evolution of one molecule of hydrogen gas.

Answer 2

Answer:

Fe + O2 + H2O → Fe2O3 2Mg+OO ⟶2MgO