Chemistry problem, please give a detailed reason!

This reaction is a reversible reaction, and changing the pressure (partial pressure of the material), the proportion, concentration, and temperature of the material may cause the reaction equilibrium to move.

C in A is a solid, as long as there is C in the vessel, the effect of the reaction rate is not significant and negligible.

The volume of B is reduced by half, which is equivalent to doubling the concentrations of H2O(g), CO2(G) and H2(G), and the positive and secondary reaction rates are increased.

The filling of N2 in C does not change the proportion and concentration of the material, and the partial pressure of the material participating in the reaction also does not change, so it has no effect on the reaction rate.

The doubling of the volume under constant pressure is equivalent to the doubling of the concentrations of H2O(G), CO2(G) and H2(G), and the rate of positive and secondary reactions.

The answer is AC description: chemical reactions are caused by collisions between molecules, and the reaction rate can be changed by changing the collision probability, that is, by changing the concentration or temperature.

Select AC analysis: A sealed container with variable volume is a container where gas cannot go out, but the volume can change.

A: Carbon is a solid and it has a concentration of 1 and has no effect on the reaction rate.

B: When the volume is reduced by half, the concentration of each component increases, and the reaction rate also increases.

C: The volume remains unchanged, the concentration of each gas is not changed, and the reaction rate is unchanged D: The volume increases, the concentration of each component of the gas decreases, and the reaction rate decreases Whether the pressure can change the reaction rate, it depends on whether the pressure can change the concentration of each component of the reactant, for example, take C, the volume does not change, and N2 is charged, but the concentration of the original H2O, CO2 and H2 hydrogen does not change, in other words, the pressure generated by N2 is invalid pressure, so the reaction rate remains unchanged, The balance also doesn't move.

In option D, if you want to keep the pressure constant after N2 is charged, the volume of the container will increase, and the increase in volume will lead to a decrease in the concentration of gas components, a decrease in the reaction rate, and the equilibrium will move to the right. The key is: whether increasing the pressure changes the concentration of gas reactants, changes the reaction rate, and does not change.

A right. C (carbon) is a solid. So no matter how much it is, it doesn't matter.

b.The reactant gas coefficient is 1 and the product two gases add up to a coefficient of 2 so changing the pressure volume has an effect.

If the volume is reduced by half, then the pressure increases, the reaction moves in reverse, and the reaction rate increases.

c certainly has no effect on irrelevant gases.

d.An increase in volume means a decrease in pressure. Then the forward movement decreases the reaction rate.

Hope the answer is helpful.

Just as a reference I'm sorry. Maybe I can't say it myself. You can ask your chemistry teacher. The chapter on reaction rate is very interesting.

A to C is solid, the amount of change does not affect B is equivalent to the acceleration of the pressurization rate C pair, which is equivalent to the filling of irrelevant gas d The error rate will be slowed down Supplement: Although the pressure in C increases, the volume of the container does not change, and the reaction rate remains the same. The acceleration of the reaction to increase the pressure mentioned in the textbook refers to the situation when the volume of the container decreases, which should be explained in the book.

A because carbon is solid and does not affect the chemical equilibrium rate, and the rush of nitrogen does not participate in the reaction and has no effect on the chemical equilibrium, so because the pressure does not change, the volume increases, so the density of the reactants decreases, so the reaction rate slows down, so D is wrong.