A student heats calcium nitrate crystals using the apparatus illustrated. A colourless gas escapes from the apparatus at Y. A flame is brought to this gas. Which observations would the student make?
- Alitmus solution changes to blue; flame burns more brightly
- Blitmus solution changes to blue; flame goes out
- Clitmus solution changes to red; flame burns more brightly
- Dlitmus solution changes to red; flame goes out