Question

1. true or false, this is the correct reverse equation of the burning of hydrogen in oxygen?

2h₂o(l) + energy → o₂(g)
true
false

1. in the electrolysis apparatus, where do the hydrogen ions go?

the positive hydrogen ions collect at the negative electrode.
the positive hydrogen ions collect at the positive electrode.
the negative hydrogen ions collect at the positive electrode.

1. based on your observations of the electrolysis apparatus, where do the oxide ions go?

the negative oxide ions collect at the positive electrode.
the negative oxide ions collect at the negative electrode.
the positive oxide ions collect at the negative electrode.

Explanation:

Question 3

Step1: Recall the burning of hydrogen

The burning (combustion) of hydrogen in oxygen is \( 2H_2(g) + O_2(g)
ightarrow 2H_2O(l) + \text{Energy} \) (exothermic). The reverse reaction would be the decomposition of water, which is \( 2H_2O(l) + \text{Energy}
ightarrow 2H_2(g) + O_2(g) \). The given equation only has \( O_2(g) \) as a product, missing \( H_2(g) \), so it's incorrect.

Step2: Determine the answer

Since the reverse equation is incomplete (missing \( H_2(g) \)), the statement is false.

In electrolysis, positive ions (cations) are attracted to the negative electrode (cathode). Hydrogen ions (\( H^+ \)) are positive, so they move to the negative electrode.

In electrolysis, negative ions (anions) are attracted to the positive electrode (anode). Oxide ions (\( O^{2-} \)) are negative, so they move to the positive electrode.

Answer:

False

Question 4