A salt X of aluminium in the form of dry powder is heated strongly and a gas Y is given
oﬀ. Y when passed through lime water turns it milky.
1. What are the number of oxygen atoms in a molecule of X?
2. When excess of Y is passed through lime water then Z is produced which is fully
soluble and produces a colourless solution . What is the valency of the anion in Z?

Question

A salt X of aluminium in the form of dry powder is heated strongly and a gas Y is given
oﬀ. Y when passed through lime water turns it milky.
1. What are the number of oxygen atoms in a molecule of X?
2. When excess of Y is passed through lime water then Z is produced which is fully
soluble and produces a colourless solution . What is the valency of the anion in Z?

anonymous · Answer

'when passed through lime water turns it milky' what gas is this?

anonymous · Answer

Don't know that's what you need to find.

wolfe8 · Answer

You can Google what gas turns lime water milky. :)