A heating curve has two flat lines, or plateaus. What does the plateau at the lower temperature represent?
2 answers:
Answer:
B) Melting of a solid.
Explanation:
- Kindly, see the attached image.
- It is known that the substance has different 3 phases (solid, liquid, and gas).
- By heating, the substance converted from solid phase to liquid phase passing by a plateau that represents equilibrium between the two phases.
- By further heating, the solid completely converted into liquid phase, then converted to gaseous phase passing by a plateau that represents an equilibrium between the liquid an gaseous phase.
<em>The plateau at the lower temperature represent: B) Melting of a solid.</em>
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Answer:
[IBr] = 0.049 M.
Explanation:
Hello there!
In this case, according to the balanced chemical reaction:
It is possible to set up the following equilibrium expression:
Whereas the the initial concentrations of both iodine and bromine are 0.50 M; and in terms of (reaction extent) would be:
Which can be solved for to obtain two possible results:
Whereas the correct result is 0.0245 M since negative results does not make any sense. Thus, the concentration of the product turns out:
Regards!