Question

Помогите пожалуйста Sos срочно Расставьте коэффициенты в приведенных схемах химических реакций и укажите, к каким типом они относятся: a)KClO3 -->KCl+O2 б)Al+HCl-->AlCl3+H2 в)N2+H2-->NH3 г)Сa+O2-->CaO д) Fe2O3+H2-->Fe+H2O

Answer 1

2KClO3=2KCl+3O2
 2Al+6HCl=2AlCl3+3H2
N2+3H2=2NH3
2Ca+O2=2CaO
Fe2O3 + 3H2 = 2Fe + 3H2O

Answer 2

a) KClO3 --> KCl + O2

The given chemical equation represents the decomposition of potassium chlorate (KClO3) into potassium chloride (KCl) and oxygen gas (O2). To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

The balanced equation is: 2 KClO3 --> 2 KCl + 3 O2 [[1]]

This reaction is a decomposition reaction, where a single compound breaks down into two or more simpler substances.

b) Al + HCl --> AlCl3 + H2

The given chemical equation represents the reaction between aluminum (Al) and hydrochloric acid (HCl) to form aluminum chloride (AlCl3) and hydrogen gas (H2). To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

The balanced equation is: 2 Al + 6 HCl --> 2 AlCl3 + 3 H2 [[2]]

This reaction is a single replacement reaction, where one element replaces another element in a compound.

c) N2 + H2 --> NH3

The given chemical equation represents the reaction between nitrogen gas (N2) and hydrogen gas (H2) to form ammonia (NH3). To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

The balanced equation is: N2 + 3 H2 --> 2 NH3 [[3]]

This reaction is a synthesis reaction, where two or more substances combine to form a single compound.

г) Сa + O2 --> CaO

The given chemical equation represents the reaction between calcium (Ca) and oxygen gas (O2) to form calcium oxide (CaO). To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

The balanced equation is: 2 Ca + O2 --> 2 CaO [[4]]

This reaction is a synthesis reaction, where two or more substances combine to form a single compound.

д) Fe2O3 + H2 --> Fe + H2O

The given chemical equation represents the reaction between iron(III) oxide (Fe2O3) and hydrogen gas (H2) to form iron (Fe) and water (H2O). To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

The balanced equation is: Fe2O3 + 3 H2 --> 2 Fe + 3 H2O [[5]]

This reaction is a reduction-oxidation (redox) reaction, where there is a transfer of electrons between the reactants.

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