CH-1650
Tests for gases
Chemistry · Secondary 4 · Easy · Tests for gases
During the electrolysis of aqueous sodium chloride using graphite electrodes, a colourless gas is collected at the cathode.
Which test and observation correctly identify this gas?
Which test and observation correctly identify this gas?
- Insert a lighted splint; it burns with a squeaky pop
- Insert a glowing splint; it relights
- Bubble through limewater; limewater turns milky
- Hold damp blue litmus; it turns red then bleaches
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