Question

Расставить коэффициенты, определитель тип реакции. Дать названия вещества. а) H2+O2=H2O б)Cl2+O2=Cl2O7 в)CuOH=Cu2O+H2O г)Ba(OH)2+HNO3=Ba(NO3)2+H2O д)Fe+HCl=FeCl2+H2 В д) после H2 идёт стрелка вверх.

Answer 1

a) H2 + O2 = H2O

The balanced equation for the reaction is:

2H2 + O2 = 2H2O

In this reaction, hydrogen gas (H2) reacts with oxygen gas (O2) to form water (H2O). The coefficients in front of the molecules indicate the number of molecules or moles involved in the reaction. In this case, two molecules of hydrogen gas react with one molecule of oxygen gas to produce two molecules of water.

b) Cl2 + O2 = Cl2O7

The balanced equation for the reaction is:

2Cl2 + 7O2 = 2Cl2O7

In this reaction, chlorine gas (Cl2) reacts with oxygen gas (O2) to form dichlorine heptoxide (Cl2O7). The coefficients in front of the molecules indicate the number of molecules or moles involved in the reaction. In this case, two molecules of chlorine gas react with seven molecules of oxygen gas to produce two molecules of dichlorine heptoxide.

c) CuOH = Cu2O + H2O

The balanced equation for the reaction is:

2CuOH = Cu2O + H2O

In this reaction, copper hydroxide (CuOH) decomposes to form copper(I) oxide (Cu2O) and water (H2O). The coefficients in front of the molecules indicate the number of molecules or moles involved in the reaction. In this case, two molecules of copper hydroxide decompose to produce one molecule of copper(I) oxide and one molecule of water.

d) Ba(OH)2 + HNO3 = Ba(NO3)2 + H2O

The balanced equation for the reaction is:

Ba(OH)2 + 2HNO3 = Ba(NO3)2 + 2H2O

In this reaction, barium hydroxide (Ba(OH)2) reacts with nitric acid (HNO3) to form barium nitrate (Ba(NO3)2) and water (H2O). The coefficients in front of the molecules indicate the number of molecules or moles involved in the reaction. In this case, one molecule of barium hydroxide reacts with two molecules of nitric acid to produce one molecule of barium nitrate and two molecules of water.

e) Fe + HCl = FeCl2 + H2

The balanced equation for the reaction is:

Fe + 2HCl = FeCl2 + H2

In this reaction, iron (Fe) reacts with hydrochloric acid (HCl) to form iron(II) chloride (FeCl2) and hydrogen gas (H2). The coefficients in front of the molecules indicate the number of molecules or moles involved in the reaction. In this case, one atom of iron reacts with two molecules of hydrochloric acid to produce one molecule of iron(II) chloride and one molecule of hydrogen gas.

Regarding the statement "after H2, there is an upward arrow," it seems to suggest that hydrogen gas (H2) is being released or evolving in the reaction.