Sodium carbonate solution is added to a burette containing a little hydrochloric acid and Universal Indicator. The two solutions react, with effervescence, and the liquid in the burette shows a ‘rainbow’ of all the colours of Universal Indicator from red through orange, yellow, green and blue to purple.
This practical is part of our Chemistry for Non-Specialists collection.
2021-04-21T10:15:00Z
Try these tips, ideas and activities to help you teach this topic
Monday 26 July, 3.45-4.45pm BST, online.
2021-03-24T10:24:00Z
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