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Results tagged with physical-chemistry
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user 95340
The study of chemical systems using the laws and concepts of physics. This usually requires the techniques of thermodynamics, statistical mechanics and quantum mechanics.
-2
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1
answer
103
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Finding the ratio of rate constants [closed]
A group of mountain climbers set up a camp at a $\pu{3 km}$ altitude and experience a barometric pressure of $\pu{0.69 atm}$. They discover that pure water boils at $\pu{90 ^\circ C}$ and that it tak …
- 1,261
4
votes
1
answer
627
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Can we compare the vapour pressure of solutions whose concentrations and temperature is known?
If we have some solutions, in which we know the temperature and concentration of the solute particles, can we compare their vapour pressures?
Original question:
Which solution has the highest vapou …
- 1,261
2
votes
Accepted
What is the change in enthalpy for constant volume?
We define a state function enthalpy as $$H=U+PV$$
Since we cannot measure the absolute value of enthalpy, but the change in it, we modify the equation to $$\Delta H= \Delta U +\Delta(PV)$$
Which is th …
- 1,261
3
votes
Accepted
Equilibrium for the synthesis of methanol
Note that under the given conditions, methanol cannot exist in the liquid state, however since you are given in the problem that methanol is obtained in liquid state, you will only consider the equili …
- 1,261