question_answer 51)

  The positive value of the standard electrode potential of Cu2+/Cu indicates that........... (a) this redox couple is a stronger reducing agent than the H+ /H2 couple (b) this redox couple is a stronger oxidising agent than H+ /H2                   (c) Cu can displace H2 from acid (d) Cu cannot displace H2 from acid

Answer:

                    (b, d) 'Lesser the E° value of redox couple higher the reducing power" Since,   has lesser SRP than  /Cu redox couple. Therefore, (I) This redox couple is a stronger oxidising agent than H+ /H2 (ii) Cu can't displace Hg from acid. Hence, (b) and (d) are correct.