(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.