Which of the following are considered pure substances?
2 answers:
Answer: Option (A) is the correct answer.
Explanation:
A pure substance is defined a substance that contains atoms of same element and it has constant composition throughout the sample.
For example, sulfur, , nitrogen etc are all pure substances.
Whereas a compound is a substance that contains two or more substances which are combined together in a fixed composition.
For example, NaCl is a compound.
When components of solute are uniformly distributed in a solvent then the solution is known as homogeneous solution.
When components of solute are non-uniformly distributed in a solvent then the solution is known as heterogeneous solution.
Thus, we can conclude that elements are considered pure substances.
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Answer:
The new partial pressures after equilibrium is reestablished for :
The new partial pressures after equilibrium is reestablished :
The new partial pressures after equilibrium is reestablished for :
Explanation:
At equilibrium before adding chlorine gas:
Partial pressure of the
Partial pressure of the
Partial pressure of the
The expression of an equilibrium constant is given by :
At equilibrium after adding chlorine gas:
Partial pressure of the
Partial pressure of the
Partial pressure of the
Total pressure of the system = P = 263.0 Torr
At initail
(13.2) Torr (32.8) Torr (13.2) Torr
At equilbriumm
(13.2-x) Torr (32.8-x) Torr (217.0+x) Torr
Solving for x;
x = 6.402 Torr
The new partial pressures after equilibrium is reestablished for :
The new partial pressures after equilibrium is reestablished :
The new partial pressures after equilibrium is reestablished for :