Question

HELPP!!!!!

What happened to the color of the ammonia solution after phenolphthalein was added?

What happened to the color of the ammonia solution after vinegar was added?

Is ammonia an acid or a base?

Why did the pink color disappear after adding vinegar to the ammonia solution?

What do you think will happen if you add more ammonia to the solution?

Answer 1

The solution turns purple because ammonia is a base.

The solution turned red.

Ammonia gas is neutral, but ammonia solution ( ammonium hydroxide ) is a base.

Adding vinegar to ammonia suppresses its dissociation hence decrease in hydroxyl ion concentration.

If more ammonia is added to the solution, the pink color re-appears.