Compounds such as alcohols and glucose also contain hydrogen but are not categorized as acids. Describe an activity to prove it.
Answers
Explanation:
Two nails are fitted on a cork and are kept it in a 100 mL beaker. The nails are then connected to the two terminals of a 6-volt battery through a bulb and a switch. Some dilute HCl is poured in the beaker and the current is switched on. The same experiment is then performed with glucose solution and alcohol solution.
Observations:
It will be observed that the bulb glows in the HCl solution and does not glow in the glucose solution.
Result:
HCl dissociates into H+and Cl−ions. These ions conduct electricity in the solution resulting in the glowing of the bulb. On the other hand, the glucose solution does not dissociate into ions. Therefore, it does not conduct electricity.
Conclusion:
From this activity, it can be concluded that all acids contain hydrogen but not all compounds containing hydrogen are acids.
That is why, though alcohols and glucose contain hydrogen, they are not categorised as acids.
EXPLAINATION
- We know that ,in acid H+ ions completely ionize in water so that they conduct electricity.
- While compounds like alcohols and glucose partially ionises into the water.
- That why Alcohol & Glucose are not considered as acids.
ACTIVITY
- Take 3 Beakers
- Name The Beakers as A , B & C
- Take HCL in beaker A , alcohol in beaker B & glucose in beaker C
- Make a electric circuit. Connect the wire with 3 beakers.
- Beaker, in which, the bulb glows, that Beaker contain acid because acids complete disassociates into water to form H+ & OH- ions which conducts electricity.
- This activity prove that the electricity passes through completely ionised liquids are acids.