Chemistry
When compound X reacts with dilute sulphuric acid, it releases a gas that turns acidified potassium dichromate solution from orange to green. Which of the following could be compound X?
- Lead nitrate
- Copper carbonate
- Sodium chloride
- Potassium sulphite
Related Questions
Identify the ion that contain one lone pair of electrons.
- OH-1
- H3O+
- NH4+
- H+
Four reactions are shown below in the diagram:
Which reactions produce water?
- 1 and 2
- 1 and 3
- 3 and 4
- 2 and 3
The volume occupied by 2 moles of a gas at STP is:
- 22.4L
- 2.24L
- 44.8L
- 4.48L
Identify from the following metal oxide which can react with an acid as well as an alkali.
- Silver oxide
- Calcium oxide
- Copper(II) oxide
- Aluminium oxide