Question

Расставьте коэфициэеты методом электронного баланса; укажите окислитель и восстаночитель a) CO+H2O<=>CO2+H2 d)CuO+C->CO2+Cu c)Can+C->CaC2

Answer 1

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Answer 2

Balancing Chemical Equations using the Method of Electron Balance

To balance the given chemical equations using the method of electron balance, we need to ensure that the number of atoms of each element is the same on both sides of the equation. We will start by balancing the elements that appear in the fewest compounds and then proceed to balance the remaining elements.

a) CO + H2O <=> CO2 + H2

Let's start by balancing the carbon (C) atoms. There is one carbon atom on the left side and one carbon atom on the right side, so carbon is already balanced.

Next, let's balance the hydrogen (H) atoms. There are two hydrogen atoms on the left side and two hydrogen atoms on the right side, so hydrogen is also balanced.

Finally, let's balance the oxygen (O) atoms. There are two oxygen atoms on the left side and two oxygen atoms on the right side, so oxygen is balanced as well.

Therefore, the balanced equation is:

CO + H2O <=> CO2 + H2

b) CuO + C -> CO2 + Cu

Let's start by balancing the copper (Cu) atoms. There is one copper atom on the left side and one copper atom on the right side, so copper is already balanced.

Next, let's balance the oxygen (O) atoms. There is one oxygen atom on the left side and two oxygen atoms on the right side. To balance the oxygen atoms, we need to add a coefficient of 2 in front of CuO on the left side.

The equation becomes:

2CuO + C -> CO2 + Cu

Finally, let's balance the carbon (C) atoms. There is one carbon atom on the left side and one carbon atom on the right side, so carbon is also balanced.

Therefore, the balanced equation is:

2CuO + C -> CO2 + Cu

c) CaO + C -> CaC2

Let's start by balancing the calcium (Ca) atoms. There is one calcium atom on the left side and one calcium atom on the right side, so calcium is already balanced.

Next, let's balance the oxygen (O) atoms. There is one oxygen atom on the left side and no oxygen atoms on the right side. To balance the oxygen atoms, we need to add a coefficient of 2 in front of CaO on the left side.

The equation becomes:

2CaO + C -> CaC2

Finally, let's balance the carbon (C) atoms. There is one carbon atom on the left side and two carbon atoms on the right side. To balance the carbon atoms, we need to add a coefficient of 2 in front of C on the left side.

The equation becomes:

2CaO + 2C -> CaC2

Therefore, the balanced equation is:

2CaO + 2C -> CaC2

I hope this helps! Let me know if you have any further questions.