(a) Which element is common to all acids?
(b) Compounds such as alcohol and glucose also contain hydrogen but are not categorized as acids. Describe an activity to prove it.
(a) Hydrogen(H+) is common to all acids.
Example: HCl, H2SO4, HNO3
(b) An activity to prove compounds such as alcohol and glucose are not categorized as acids.
Procedure:
- Take samples of alcohol, glucose, and hydrochloric acid.
- Take 100 mL Beaker and a cork and fix the nails.
- Place the cork inside the beaker and connect the nails to two terminals of a 6-volt battery through a bulb and a switch.
- Add some hydrochloric acid to the beaker and on the current.
- Repeat the procedure with alcohol and glucose
Observation: In the case of acid, the bulb will glow but in the case of alcohol and glucose, it does not glow because the electric current is carried through the solution by ions.
Conclusion: Acid ionizes to give H+ ions in an aqueous medium but glucose and alcohol do not furnish H+ ions even though they contain hydrogen atoms.
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