Question

About _____ molecules in a glass of water are dissociated.

1 in 500,000,000
1 in 2
1 in 1,000,000,000
1 in 1,000,000
1 in 5,000,000

Answers

GPT-4o mini
In a glass of water, the number of water molecules that are dissociated into ions (H⁺ and OH⁻) at any given time is extremely small. The correct estimate for the dissociation of water is about **1 in 1,000,000,000**. This means that in pure water, only a very tiny fraction of water molecules are dissociated at any moment.

So the correct choice is:

**1 in 1,000,000,000**