(i) this redox couple is a stronger reducing agent than the H+/H2 couple.
(ii) this redox couple is a stronger oxidising agent than H+/H2.
(iii) Cu can displace H2 from acid.
(iv) Cu cannot displace H2 from acid.
Correct Answers:
(ii) this redox couple is a stronger oxidising agent than H+/H2.
(iv) Cu cannot displace H2 from acid.
Explanation: The positive value of the standard electrode potential of Cu2+/Cu indicates that the redox couple is a strongest oxidising agent and copper cannot displace hydrogen from acid.