. The positive value of the standard electrode potential of Cu2+/Cu indicates that _________
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The complete question is:
The positive value of the standard electrode potential of Cu²⁺/Cu indicates that
(a) This couple is a stronger reducing agent than the H⁺/H₂ couple
(b) This couple is a stronger oxidizing agent than H⁺/H₂ couple
(c) Cu can displace H₂ from acid
(d) Cu cannot displace H₂ from acid
Answer:
The positive value of the standard electrode potential of Cu²⁺/Cu indicates that this couple is a stronger oxidizing agent than H⁺/H₂ (b) and it cannot displace H₂ from acid (d)
The given question is a multiple select type and more than one answer is correct.
- In electrochemical series, the reduction potentials of various electrodes are arranged in decreasing order.
- It should be noted that negative electrode potential denotes that the couple is a stronger reducing agent than the H⁺/H₂ couple.
- While a positive electrode potential means that the couple is a weaker reducing agent than the H⁺/H₂ couple.
- Only the metals with negative reduction potential can displace hydrogen from acids.
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