Hydrogen peroxide undergoes a decomposition reaction to form water and oxygen gas.

Question

a. The boiling point of water is 100 o
C. The boiling point of hydrogen peroxide is about 150 o
C. Does this make sense? Why or why not.

(1 point)
Responses

Yes, it makes sense, because a physical change took place.
Yes, it makes sense, because a physical change took place.

Yes, it makes sense, because we expect products and reactants to have different properties.
Yes, it makes sense, because we expect products and reactants to have different properties.

No, it doesn't make sense, because we expect products and reactants to have different properties.
No, it doesn't make sense, because we expect products and reactants to have different properties.

No, it doesn't make sense, because a physical change took place.
No, it doesn't make sense, because a physical change took place.
Question 2
b. How would you expect the density of water to compare to the density of hydrogen peroxide?(1 point)
Responses

It is most likely that the density of water would be the same as the density of hydrogen peroxide.
It is most likely that the density of water would be the same as the density of hydrogen peroxide.

It is most likely that the density of water would be different from the density of hydrogen peroxide.
It is most likely that the density of water would be different from the density of hydrogen peroxide.

It is impossible to predict how the densities are likely to compare.

Answer 1

Question 1 (a):
Does this make sense? Why or why not?
Response: Yes, it makes sense, because we expect products and reactants to have different properties.

Explanation: The boiling points of substances are influenced by their molecular structures and intermolecular forces. Hydrogen peroxide (H₂O₂) has stronger hydrogen bonding compared to water (H₂O), leading to a higher boiling point for hydrogen peroxide. When hydrogen peroxide decomposes into water and oxygen, it is reasonable to observe that the products have different properties (including boiling points) than the reactant.

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Question 2 (b):
How would you expect the density of water to compare to the density of hydrogen peroxide?
Response: It is most likely that the density of water would be different from the density of hydrogen peroxide.

Explanation: The density of a substance is determined by its mass and volume. Hydrogen peroxide has a density of about 1.44 g/cm³, which is greater than the density of water, which is approximately 1 g/cm³ at 4 °C. Therefore, it is expected that the densities of water and hydrogen peroxide are different.