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 anRead more
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 g lows in the HCl solution and does not g low 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.
(c) Antacid Because antacid reduced the acidity (produced due to excess release of HCl) in the stomach. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
(c) Antacid
Because antacid reduced the acidity (produced due to excess release of HCl) in the stomach.
(d) 16 ml Because for the neutralisation, the ratio of the acid and base should be same. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
(d) 16 ml
Because for the neutralisation, the ratio of the acid and base should be same.
(b) 𝐻𝐶𝑙 The crushed egg-shells contains calcium carbonate [CaCO₃]. When 𝐻𝐶𝑙 solution reacts with this crushed egg-shells and produces carbon dioxide which turns lime – water milky. CaCO₃ +𝐻𝐶𝑙 → CaCl₂ +H₂O+CO₂ For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/sRead more
(b) 𝐻𝐶𝑙
The crushed egg-shells contains calcium carbonate [CaCO₃]. When 𝐻𝐶𝑙 solution reacts with this crushed egg-shells and produces carbon dioxide which turns lime – water milky.
CaCO₃ +𝐻𝐶𝑙 → CaCl₂ +H₂O+CO₂
(b) 𝐻𝐶𝑙 The crushed egg-shells contains calcium carbonate [CaCO₃]. When 𝐻𝐶𝑙 solution reacts with this crushed egg-shells and produces carbon dioxide which turns lime – water milky.
(b) 𝐻𝐶𝑙
The crushed egg-shells contains calcium carbonate [CaCO₃]. When 𝐻𝐶𝑙 solution reacts with this crushed egg-shells and produces carbon dioxide which turns lime – water milky.
Compounds such as alcohols and glucose also contain hydrogen but are not categorised as acids. Describe an Activity to prove it.
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 anRead more
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 g lows in the HCl solution and does not g low 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.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Which one of the following types of medicines is used for treating indigestion?
(c) Antacid Because antacid reduced the acidity (produced due to excess release of HCl) in the stomach. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
(c) Antacid
Because antacid reduced the acidity (produced due to excess release of HCl) in the stomach.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount HCl solution (the same solution as before) required to neutralise it will be
(d) 16 ml Because for the neutralisation, the ratio of the acid and base should be same. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
(d) 16 ml
Because for the neutralisation, the ratio of the acid and base should be same.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains
(b) 𝐻𝐶𝑙 The crushed egg-shells contains calcium carbonate [CaCO₃]. When 𝐻𝐶𝑙 solution reacts with this crushed egg-shells and produces carbon dioxide which turns lime – water milky. CaCO₃ +𝐻𝐶𝑙 → CaCl₂ +H₂O+CO₂ For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/sRead more
(b) 𝐻𝐶𝑙
The crushed egg-shells contains calcium carbonate [CaCO₃]. When 𝐻𝐶𝑙 solution reacts with this crushed egg-shells and produces carbon dioxide which turns lime – water milky.
CaCO₃ +𝐻𝐶𝑙 → CaCl₂ +H₂O+CO₂
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains
(b) 𝐻𝐶𝑙 The crushed egg-shells contains calcium carbonate [CaCO₃]. When 𝐻𝐶𝑙 solution reacts with this crushed egg-shells and produces carbon dioxide which turns lime – water milky.
(b) 𝐻𝐶𝑙
See lessThe crushed egg-shells contains calcium carbonate [CaCO₃]. When 𝐻𝐶𝑙 solution reacts with this crushed egg-shells and produces carbon dioxide which turns lime – water milky.