Which one of the following metals will not re | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The ability of a metal to reduce $H_2O$ depends on its standard reduction potential. Metals with a negative reduction potential (more active than

Vedclass · Accepted Answer

$Cu$

Vedclass · Answer

(C) The ability of a metal to reduce $H_2O$ depends on its standard reduction potential. Metals with a negative reduction potential (more active than hydrogen) can displace hydrogen from water.$E_{Li^{+}/Li}^0 = -3.04 \, V$$E_{Ca^{2+}/Ca}^0 = -2.87 \, V$$E_{Fe^{2+}/Fe}^0 = -0.44 \, V$$E_{Cu^{2+}/Cu}^0 = +0.34 \, V$Since $Cu$ has a positive reduction potential and is placed below hydrogen in the electrochemical series,it cannot displace hydrogen from water. Thus,$Cu + H_2O 	o 	ext{No reaction}$.

Which one of the following metals will not reduce $H_2O$?

Similar Questions

In a galvanic cell,the electrons flow from:

Which of the following are intensive properties?
$(i)$ Molar conductivity
$(ii)$ Electromotive force $(EMF)$
$(iii)$ Resistance
$(iv)$ Heat capacity

Which of the following statements is true for a standard electrochemical cell consisting of $H_2$ and $Cu$ electrodes?

Assertion : Galvanised iron does not rust.
Reason : Zinc has a more negative electrode potential than iron.

Vedclass Test Series

Exam Paper Generator

Online Exam Module