A sample of anhydrous calcium nitrate is put into a test-tube and heated in a roaring Bunsen flame until it breaks down. The gas in the test-tube is then observed. A glowing splint is then inserted into the test-tube and any changes are recorded. Which observations are correct?
- Abrown gas; the splint goes out
- Bbrown gas; the splint relights
- Ccolourless gas; the splint goes out
- Dcolourless gas; the splint relights