Answer:
The concentration of SO₂ will decreases
Explanation:
As you can see in the reaction
2 moles of gas ⇆ 3 moles of gas
Based on Le Châtelier's principle, a change doing in a system will produce that the system reacts in order to counteract the change made.
If the pressure is increased, the system will shift to the left in order to produce less moles of gas and decrease, thus, the pressure.
As the system shift to the left, the concentration of SO₂ will decreases
Answer:
heat capacity: "the number of heat units needed to raise the temperature of a body by one degree."
Explanation:
Hydrogen ions H +(aq) (from the water) are discharged at the negative electrode as hydrogen gas, H 2(g)
Answer : The enthalpy change for dissolving this salt on a energy per mass basis is 132.4 J/g
Explanation :
Heat released by the reaction = Heat absorbed by the calorimeter + Heat absorbed by the water
![q=[q_1+q_2]](https://tex.z-dn.net/?f=q%3D%5Bq_1%2Bq_2%5D)
![q=[c_1\times \Delta T+m_2\times c_2\times \Delta T]](https://tex.z-dn.net/?f=q%3D%5Bc_1%5Ctimes%20%5CDelta%20T%2Bm_2%5Ctimes%20c_2%5Ctimes%20%5CDelta%20T%5D)
where,
q = heat released by the reaction
= heat absorbed by the calorimeter
= heat absorbed by the water
= specific heat of calorimeter = ![42.2J/^oC](https://tex.z-dn.net/?f=42.2J%2F%5EoC)
= specific heat of water = ![4.184J/g^oC](https://tex.z-dn.net/?f=4.184J%2Fg%5EoC)
= mass of water = ![Density\times Volume=1/mL\times 75.0mL=75.0g](https://tex.z-dn.net/?f=Density%5Ctimes%20Volume%3D1%2FmL%5Ctimes%2075.0mL%3D75.0g)
= change in temperature = ![0.93^oC](https://tex.z-dn.net/?f=0.93%5EoC)
Now put all the given values in the above formula, we get:
![q=[(42.2J/^oC\times 0.93^oC)+(75.0g\times 4.184J/g^oC\times 0.93^oC)]](https://tex.z-dn.net/?f=q%3D%5B%2842.2J%2F%5EoC%5Ctimes%200.93%5EoC%29%2B%2875.0g%5Ctimes%204.184J%2Fg%5EoC%5Ctimes%200.93%5EoC%29%5D)
![q=331.08J](https://tex.z-dn.net/?f=q%3D331.08J)
Now we have to calculate the enthalpy change for dissolving this salt on a energy per mass basis.
![\Delta H=\frac{q}{m}](https://tex.z-dn.net/?f=%5CDelta%20H%3D%5Cfrac%7Bq%7D%7Bm%7D)
where,
= enthalpy change = ?
q = heat released = 331.08 J
m = mass of salt = 2.50 g
![\Delta H=\frac{331.08J}{2.50g}=132.4J/g](https://tex.z-dn.net/?f=%5CDelta%20H%3D%5Cfrac%7B331.08J%7D%7B2.50g%7D%3D132.4J%2Fg)
Therefore, the enthalpy change for dissolving this salt on a energy per mass basis is 132.4 J/g
Astronauts experience weightlessness which is the apparent loss of weight of an object that is falling in gravitational field