Advertisements
Advertisements
Question
The `"E"_("M"^(2+)//"M")^0` value for copper is positive. Suggest a possible reason for this.
Advertisements
Solution
- Copper has a positive reduction potential. Elemental copper is more stable than Cu2+.
- Copper having a positive sign for electrode potential merely means that copper can undergo reduction at a faster rate than the reduction of hydrogen.
- The electron-giving reaction (oxidation) of copper is slower than that of hydrogen. It is determined from the result of the S.H.E (Standard Hydrogen Electrode) potential value experiment.
APPEARS IN
RELATED QUESTIONS
The catalytic behaviour of transition metals and their compounds is ascribed mainly due to ____________.
What are transition metals? Give four examples.
Complete the following.
\[\ce{MnO^2-_4 + H^+ ->?}\]
What are interstitial compounds?
Explain briefly how +2 states become more and more stable in the first half of the first-row transition elements with increasing atomic numbers.
Explain the variation in `"E"_ ("M"^(3+)//"M"^(2+))^0` 3d series.
Compare the ionization enthalpies of the first series of the transition elements.
Which metal in the 3d series exhibits +1 oxidation state most frequently and why?
Why first ionization enthalpy of chromium is lower than that of zinc?
Transition metals show high melting points why?
