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Results tagged with physical-chemistry
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user 38684
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
votes
0
answers
2k
views
Finding the rate constant of a first order reaction
The reaction
$\ce{A + B -> AB}$
is 1st order with respect to A and zero order with respect to
B. The reaction is begun with the initial concentration of both reactants at $0.100 \,\text …
- 1,796
18
votes
What volume does one mole of an ideal gas occupy?
A big point of confusion is that it is still taught (at least in the mid-2000's) that STP is defined with respect to $\pu{273 K}$ and $\pu{1 atm}$ of pressure, or $\pu{1.01325 bar}$ of pressure, even …
- 1,796
1
vote
2
answers
669
views
Effects of pressure on equilibrium [closed]
Which system at equilibrium will not be influenced by a change in pressure?
$$
\begin{align}
\ce{3 O2(g) &<=> 2 O3(g)}\tag{A}\\
\ce{N2(g) + 3 H2(g) &<=> 2 NH3(g)}\tag{B}\\
\ce{2 NO2(g) &<=> N2O4(g)}\ …
- 1,796
3
votes
2
answers
175
views
Effect of doubling kinetic energy on phase transitions
The kinetic energy of the molecules in a sample of $\ce{H2O}$ in its stable
state at $ \pu{–10 ˚C}$ and $\pu{1 atm}$ is doubled. What are the initial and final phases? [US National Chemistry Olym …
- 1,796
3
votes
1
answer
145
views
Impact of Pressure on equilibrium of Tin allotropes
The pressure at the bottom of the Mariana Trench in the Pacific Ocean is $1090$ bar. What temperature will the two allotropes of tin be at equilibrium? Assume that the molar volume, energy, and entro …
- 1,796
2
votes
0
answers
84
views
A thermodynamics problem with an interesting equilibrium condition
Usually, when we analyze reactions, we assume that the reaction takes place at constant pressure or at constant volume. But there is no reason to assume this is generally the case, and so my friend po …
- 1,796