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With the help of labeled diagrams, describe an activity to show that acids produce ions only in aqueous solutions.
An activity to show that acids produce ions only in aqueous solutions.
- Take about 1g of sodium chloride in a clean dry test tube.
- Add some concentrated sulphuric acid, gas will be liberated and comes out through the delivery tube.
- Test the gas evolved with a dry strip of litmus paper and a wet litmus paper.
- No colour change is observed in the dry litmus paper.
- The moist blue litmus paper changes to red. This shows the gas is an acid, HCl.
Inference: The activity concludes that the hydrogen ions in HCl are produced in the presence of water because only wet litmus paper turns red but the dry one had no change.
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