Question

C + O2–> H2 + O2–> Mg + O2–>

Answer 1

Ответ:

С+О2=CO2

2Н2+О2=2Н2О

2Мg+О2=2MgO

Answer 2

The given chemical equation is not balanced, as there are different numbers of atoms on each side of the equation.

To balance the equation, we need to make sure that the number of each type of atom is the same on both sides of the equation.

C + O2– → CO2

To balance this first reaction, we need to add a coefficient of 1 in front of the carbon and a coefficient of 2 in front of the oxygen on the left-hand side:

C + 2O2– → CO2

H2 + O2– → H2O + 2e–

To balance this second reaction, we need to add a coefficient of 2 in front of the H2O on the right-hand side:

H2 + O2– → 2H2O + 2e–

Mg + O2– → MgO + 2e–

To balance this third reaction, we need to add a coefficient of 1 in front of the MgO on the right-hand side:

Mg + O2– → MgO + 2e–

Now, we can combine the three balanced reactions into a single balanced equation:

C + 2O2– → CO2 H2 + O2– → 2H2O + 2e– Mg + O2– → MgO + 2e–

Overall equation: C + 2H2 + Mg + 4O2– → CO2 + 2H2O + MgO

This is the balanced chemical equation.