Calculate the volume of a 0.15 mol dm-3 Ba(OH)2 solution required to completely neutralize 45 cm3 of a 0.29 mol dm-3 HNO3 soluti
1 answer:
Answer:
Explanation:
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In this case, given the neutralization chemical reaction of barium sulfate and nitric acid, it is possible to evidence the 1:2 mole ratio between them; thus, at the equivalence point we have:
Which in terms of molarities and volumes is:
In such a way, by solving for the volume of base, we proceed as follows:
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Answer : The assumptions appears reasonable for the isothermal process is, and
Explanation :
First law of thermodynamic : It states that the energy can not be created or destroyed, it can only change or transfer from one state to another state.
As per first law of thermodynamic,
The expression for internal energy is:
The expression for enthalpy is:
where,
= internal energy
q = heat
w = work done
n = number of moles
= specific heat capacity at constant volume
= specific heat capacity at constant pressure
= change in temperature
As we know that, the term internal energy and enthalpy is the depend on the temperature and the process is isothermal that means at constant temperature.
T = constant
= 0
So, at constant temperature the internal energy and enthalpy is equal to zero. That means,
and
Answer:
The total equilibrium pressure of the system if the volume of the reaction vessel is reduced to 1.0 L at constant temperature = 2.4 atm
Explanation:
Total pressure of the system (P₁) = 1.2 atm at equilibrium
Volume (V₁) = 2.0 lit
If the volume of the reaction vessel is reduced to (V₂)= 1.0 lit
Pressure (P₂) ?
At constant temperature using Boyle's law
p₁v₁ = p₂v₂
Total pressure at equilibrium is equal to 2.4 atm.