Is Na2S2O3 and H2SO4 reversible? Why does reducing the volume and increasing the pressure change the

All chemical reactions are reversible, with forward and reverse reaction rates. When the equilibrium constant of the positive reaction is much greater than the equilibrium constant of the reverse reaction, we say that the reaction is unidirectional; When the equilibrium constant of the positive reaction is much smaller than the equilibrium constant of the reverse reaction, we say that the reaction cannot proceed in the forward direction; When the equilibrium constant of the positive reaction and the equilibrium constant of the reverse reaction are not very different, we say that the reaction is reversible. Therefore, the reaction with the participation of gases (volume change) changes the volume and pressure and changes the chemical reaction rate.

na2s2o3 + h2so4 = na2so4 + so2↑ +s↓+ h2o

Are you studying chemical equilibrium? The reactants are solid, and the products are gases, so if the volume is reduced, the pressure increases.

The concentration of SO2 increases, which reduces the reaction rate.

Changing the pressure will only have an effect on the reaction with the participation of gas], hehe.

Therefore, zinc and sulfuric acid to produce hydrogen are also affected by pressure!

na2s2o3+h2so4=na2so4+so2 ↑+s↓+h2o

Due to the formation of gas in the reaction, when the pressure is increased and the volume is reduced, the gas escape is hindered and the reaction rate decreases.

It's irreversible, because sulfur dioxide gas is produced, and as long as the gas is produced and the gas coefficient on both sides is different, then changing the pressure will change the reaction rate.

Analysis: n2+3h2 2nh3

After pressurization, the equilibrium proceeds to the positive reaction direction of the rock hall, and the conversion rate of N2 and H2 increases, and NH3 is the product, which cannot be said to be the conversion rate, but can only be said to be the yield, and the yield of NH3 is increased by credit and demolition.

Analysis: n2+3h2

After 2NH3 is added to the Zenbi pressure, the equilibrium proceeds in the direction of positive reaction, and the volume infiltrates N2

and H2 conversion rate increases, while NH3 is a product, not the conversion rate, only the state spine can be said to be the yield, NH3 yield increases.

The chemical equation of the reaction between CO2 and NaOH is: CO2+2NaOH==Na2CO3+H2O

There is gas CO2 in the reactants

Whereas, the reaction consumes CO2

There is less gas in the space.

So the pressure decreases.

The chemical equation for the reaction between Na2CO3 and HCl is: Na2CO3+2HCl==2NaCl+H2O+CO2 gas label.

There is no gas in the reactant, whereas the reaction produces gas.

Therefore, in the limited space, the number of Kai Si Pei gas has increased.

The pressure will become greater and the year will be closed.

Na2CO3+2HCl=H2O+CO2+2NaCl is easy to look at, consuming two parts of gas (HCL does not consume gas if it is a liquid), and the dust is pure into one part of gas. When the pin brother quickly increased the pressure.

CO2 + NaOH consumes gas, does not produce gas, and of course the pressure decreases.

In the same volume, the gas increases, the pressure increases, and the gas decreases, and the pressure decreases.

co2+2naoh=na2co3+h2o

When CO2 and NaOH react, the gas CO2 is consumed violently and the pressure decreases.

There is no gas in the Na2CO3+2HCl=2NaCl+H2O+CO2 reactants, and gas is formed after the reaction per mu, and the pressure is quickly increased.

CO2 reacts with NaOH.

CO2 is consumed, the gas is reduced, and the pressure increases.

In the same way, Na2CO3 reacts with HCl to release the air pants sparrow shed, and the head of the year is strongly enlarged.

In this reaction, for every 2mol of gas decreased, 1molCO (NH2) was formed

is solid, the mass of the gas is reduced by 60g, that is, the average relative molecular mass of the reduced mixed gas is 30, when the relative molecular mass of the initial mixed gas is 30, the equilibrium moves forward, but the average relative molecular mass of the mixed gas is always 30, so the average relative molecular weight of the mixed gas remains unchanged when pressurized; Hui Bu Nian.

a. Because the average relative molecular weight of the original gas mixture is 30, the pressure is increased, the equilibrium is moving in the positive direction, and the amount of the gas mixture is decreasing, when the average molecular weight of the reduced gas mixture is 30, the average relative molecular weight of the gas mixture is unchanged in the process of equilibrium movement, so a is correct;

B. Because the average relative molecular weight of the original gas mixture is 28, the pressure is increased, the equilibrium is moving positively, and the amount of the gas mixture is decreasing, when the average relative molecular weight of the reduced gas mixture is 30, the average relative molecular weight of the remaining gas mixture will decrease, so B is wrong;

C, NH3 and CO2

When the volume ratio is 13:14, the average relative molecular mass of the gas mixture is 13 17 + 14 44

31, increase the pressure, the equilibrium moves positively, the amount of the mixed gas is decreasing, when the average relative molecular mass of the reduced mixed gas is 30, the average relative molecular weight of the remaining mixed gas will increase, so c is wrong;

D, NH3 and CO2

When the volume ratio is 14:15, the average relative molecular mass of the mixed gas is 14 17 + 15 44

When the average relative molecular weight of the reduced gas mixture is 30, the average relative molecular weight of the remaining gas mixture will increase, so d is wrong;

So choose A

Analysis: n2+3h2

Zenbi = >

After NH3 is pressurized, the equilibrium proceeds in the direction of positive reaction, so the conversion rate of N2 and H2 increases, and NH3 is the product, which cannot be said to be the conversion osmeability rate, but can only be said to be the yield, and the yield of NH3 increases. State Attack Spine.

Oh, yes! If N2 and H2 increase, the positive reaction rate increases, and the reverse reaction speed bridge Sun liquid also increases! But the positive reaction increases more than the reverse reaction! That's why the sensitive object is moving in the direction of the positive Kairu reaction!

1. If hydrogen does not participate in the reaction, the reaction rate of hydrogen gas does not change.

When hydrogen is introduced, the volume does not change, the pressure increases, the hydrogen does not participate in the reaction, and under this condition, the concentration of the corresponding substances remains unchanged compared with that when hydrogen is not filled, the reaction rate remains unchanged, and the equilibrium does not move.

2. If hydrogen participates in the reaction, the reaction rate of hydrogen gas will increase.

When hydrogen is introduced, the volume does not change, the pressure increases, and the hydrogen participates in the reaction, and under this condition, the concentration increases when the hydrogen is filled with hydrogen compared with when it is not filled with hydrogen. The reaction rate increases the equilibrium shift.

Answer: PV=NRT

p: pressure, v: volume, n: amount of substance, r: universal constant of gas, t: temperature.

The right side of the equation does not change, the pressure increases, and the volume decreases in order for the equation to hold. If the conversion rate increases, the positive reaction is the reaction in which the volume of the gas decreases.

Increase the pressure, and the equilibrium moves in the direction of the shrinkage reaction.