All Questions
Tagged with equilibrium gas-laws
43
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Is vapour pressure of a liquid solution constant at a given temperature, no matter the size of closed container and amount of liquid taken?
Does vapour pressure of a liquid solution depend on the size of the closed container, the amount of solution taken, given that, the temperature is kept constant? Or will it change if some extra gas is ...
- 6,801
1
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4
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246
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How do I determine temperature and pressure rise whenever mols of gases are added in a isolated room?
Let's consider a fully isolated room, no gas or heat flowing from it.
We consider gases ($\ce{O2,N2,CO2}$) to follow the ideal gas law, and no chemical reaction occurs between them.
Pressure $p$, ...
- 222
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1
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According to PV=nRT,if we increase temp,no of moles will decrease,but no of moles is dependent on mass,mass is constant,then how can moles change?
We know the ideal gas equation is PV=nRT,then, according to this,if we keep Pressure,volume to be constant,then on increasing temperature,no of moles will reduce,this would mean that mass of matter or ...
- 42.7k
1
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1
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How to shift SO3/SO2 equilibrium?
I am struggling with a chemical equilibrium question and would appreciate some help. The question involves a closed system where the equilibrium
$$\ce{2SO2(g) + O2(g) <=> 2SO3(g)}$$
has been ...
- 44.3k
1
vote
2
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90
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Find the percentage of dissociation of nitrogen tetroxide given pressure, temperature, enthalpy and entropy
Given
$$
\begin{align}
\Delta_\mathrm f H^\circ(\ce{N2O4}) &= \pu{9.16 kJ mol^-1}
&\quad
\Delta_\mathrm f H^\circ(\ce{NO2}) &= \pu{33.18 kJ mol^-1}
\\
S^\circ(\ce{N2O4}) &= \pu{304.3 ...
- 22.5k
3
votes
1
answer
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Dissociation of phosphorus pentachloride in gas syringe
Phosphorus pentachloride is introduced into an empty gas syringe which has a movable, tightly-fitting plunger. The gas is allowed to expand until equilibrium is reached at a temperature at which the ...
- 29.2k
2
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1
answer
220
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Partial pressure of gases in a container with a piston
I've been having problems with the following problem.
Figure 1.
A container with a piston like that shown in Figure 1 is filled with $0.10$ $mol$ of Ar and $1.00$ $mol$ of water (liquid and vapor). ...
- 3,151
-3
votes
1
answer
537
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How to calculate Kp without knowing the volume? [closed]
I have the following chemical equation:
$$\ce{Sb2S3 + 3H2 <=> 2 Sb + 3H2S}$$
I have $\pu{1000 grams}$ of $\ce{Sb2S3}$ that reacts with $\pu{10 grams}$ of $\ce{H2}$ in a reactor at $\pu{713 K}$.
...
- 1
1
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1
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84
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Concentration of expanding gases
At $t = 0$ we have 10 moles of $\ce{NO2}$ and 10 moles of $\ce{N2O4}$ satisfying this reaction in a 0.75 liter tank (the barrier is closed at this time):
$$\ce{N2O4 <=> 2NO2}$$
The system is ...
- 10.9k
1
vote
1
answer
138
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Equilibrium composition of methane–water system under given conditions
Calculate the equilibrium composition of a reactive system consisting of an equimolecular mixture of $\ce{CH4}$ and $\ce{H2O}$ at $\pu{900 K}$ and $\pu{1 atm},$ considered to be an ideal mixture of ...
- 42.7k
6
votes
1
answer
459
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Can potassium carbonate be used to calibrate hygrometers?
Context:
In the process of trying to calibrate a number of hygrometers, with Sensirion MEMS electronic sensors, I came across the method of using wet salt: an airtight container will stabilize at a ...
- 163
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Calculating the number of volatile molecules in a container of known volume [closed]
Is it possible to calculate the number of volatile molecules (so only those in the gaseous phase) in a container of known volume, if the vapor pressure of the compound is known? So for example, if you ...
CommunityBot
- 1
3
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0
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Why does high blood gas partition coefficient of a inhalational anaesthetic drug mean slower induction of anesthesia?
High blood gas partition coefficient of a drug corresponds to higher solubility of the drug in blood leading to high concentration of the drug in blood with respect to gas (air in alveoli). If the ...
3
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1
answer
408
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Percent degree of dissociation of gas by pressure
I stumbled across the following interesting problem:
Assume that you have started to live on a new planet where standard pressure condition is $\pu{2 bar}$, standard concentration is $\pu{1 M},$ and ...
CommunityBot
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1
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How can I calculate the percentage of dissociated dinitrogen tetroxide?
When $\pu{36.8 g}$ $\ce{N2O4(g)}$ is introduced into a 1.0-litre flask at $\pu{27 °C}$ the following equilibrium reaction occurs: $\ce{N2O4(g) <=> 2NO2(g)}$; $K_p = 0.1642~\mathrm{atm}$.
Find ...
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