Which of the following is(are) true when HCI (g) is passed through wat...
When HCl (g) is passed through H2O (l), It ionises in the solution as it forms their respective ions in the solution.
In water, (H2O) it forms Hydronium ion (H3O) in the solution due to the combination of Hydrogen H2 in with water molecule.
H+Cl- + H2O ==> H3O+ + Cl- .
Here, two molecules of Hydrogen combines with the one molecule of Hydrogen where, Hydrogen is combined with the Chlorine and formed HCl in the reacting side of the chemical equation.
So, the right answer is option c.
Which of the following is(are) true when HCI (g) is passed through wat...
Understanding HCl in Water
When hydrochloric acid (HCl) gas is dissolved in water, several important processes occur. Let's break down the statements provided to determine their validity.
Statement Analysis
- (i) HCl does not ionise in the solution as it is a covalent compound.
This statement is incorrect. While HCl is a covalent compound, it does ionize in water.
- (ii) HCl ionises in the solution.
This statement is true. When HCl gas is dissolved in water, it dissociates into ions.
- (iii) It gives both hydrogen and hydroxyl ions in the solution.
This statement is misleading. HCl does release hydrogen ions (H+) but does not produce hydroxyl ions (OH-) directly. The presence of hydroxyl ions in the solution is a result of water's autoionization, not from HCl itself.
- (iv) It forms hydronium ion in the solution due to the combination of hydrogen ion with water molecule.
This statement is true. The hydrogen ions released from HCl combine with water molecules to form hydronium ions (H3O+).
Conclusion
Based on the analysis:
- The correct statements are (ii) and (iv).
Therefore, the correct answer is option 'C', which states that HCl ionizes in solution and forms hydronium ions. This is a fundamental concept in understanding the behavior of acids in aqueous solutions.
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