Carbon dioxide is commonly found as a solid (dry ice) or a gas (carbon dioxide gas). Jeff's teacher asked him to draw models to
show the motion of carbon dioxide molecules that make dry ice different from carbon dioxide gas. Describe what was correct and what might be improved about Jeff's models in showing the motion of the carbon dioxide molecules that make dry ice different from carbon dioxide gas
2 answers:
Answer:
An image is given for reference.
Explanation:
- Dry ice is also named as CO 2 and gets its name as it does not melt into a liquid when heated, and instead, it directly changes into a gas by the process of sublimation.
- When energy is being transferred from one state to another the CO 2 gas is pressurized and refrigerated. In terms of molecular motion and kinetic energy, gas molecules can exert pressure and molecules moves in up and down direction.
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Answer: The rate increases 3 times on raising the temperature from 20degree to 30 degree
Explanation:
According to Arrhenius equation with change in temperature, the formula is as follows.
where = rate constant at temp
= rate constant at temp
= activation energy
R= gas constant
= temperature =
= temperature =
Thus rate increases 3 times on raising the temperature from 20degree to 30 degree