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STATEMENT 1: Electrolysis of acidulated ...

STATEMENT 1: Electrolysis of acidulated water using inert electrodes results in evolution of gases at cathode and anode both
STATEMNET 2: `AI^(3+)` discharges more readily than `Zn^(2+)` at cathode
STATEMENT 3: In an electrolytic cell cation move towards anode

A

FTT

B

TTT

C

FTF

D

TFF

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statements provided in the question, we will evaluate each statement one by one and determine whether they are true or false. ### Step 1: Evaluate Statement 1 **Statement 1:** Electrolysis of acidulated water using inert electrodes results in evolution of gases at cathode and anode both. - **Explanation:** When acidulated water (water mixed with an acid, like sulfuric acid) undergoes electrolysis, it dissociates into H⁺ and OH⁻ ions. At the anode (positive electrode), OH⁻ ions are oxidized to produce oxygen gas (O₂). At the cathode (negative electrode), H⁺ ions are reduced to produce hydrogen gas (H₂). Therefore, gases evolve at both electrodes. - **Conclusion:** Statement 1 is **True**. ### Step 2: Evaluate Statement 2 **Statement 2:** Al³⁺ discharges more readily than Zn²⁺ at cathode. - **Explanation:** The discharge of ions at the cathode depends on their reduction potentials. The standard reduction potential for Al³⁺ is -1.66 V, while for Zn²⁺ it is -0.76 V. A higher (less negative) reduction potential indicates that the ion is more readily reduced. Since Zn²⁺ has a higher reduction potential than Al³⁺, Zn²⁺ will discharge first at the cathode. - **Conclusion:** Statement 2 is **False**. ### Step 3: Evaluate Statement 3 **Statement 3:** In an electrolytic cell, cations move towards the anode. - **Explanation:** In an electrolytic cell, cations (positively charged ions) are attracted to the cathode (which is negatively charged) because opposite charges attract. Conversely, anions (negatively charged ions) move towards the anode (which is positively charged). Therefore, cations do not move towards the anode. - **Conclusion:** Statement 3 is **False**. ### Final Conclusion - Statement 1: True - Statement 2: False - Statement 3: False The correct answer is **True, False, False**.
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