Advertisements
Advertisements
Question
Balance the following equation by the ion electron method.
\[\ce{Zn + NO^-_3 ->Zn^2+ + NO}\] (in acid medium)
Advertisements
Solution
Half reactions are
\[\ce{Z^0n -> Zn^2+}\] ...........(1)
\[\ce{N^{+5}O^-_3 -> N^2+O}\] ......(2)
\[\ce{Zn -> Zn^2+ + 2e^-}\] .........(3)
\[\ce{NO^-_3 + 3e^- + 4H^+ -> NO + 2H2O}\] ........(4)
\[\ce{3Zn -> 3Zn^2+ + 6e^-}\] .......(5) [Eq. (3) × 3]
\[\ce{2NO^-_3 + 6e^- + 8H^+ -> 2NO + 4H2O}\] ...........(6) [Eq. (4) × 2]
\[\ce{3Zn + 2NO^-_3 + 8H^+ -> 3Zn^2+ + 2NO + 4H2O}\]
APPEARS IN
RELATED QUESTIONS
1 g of an impure sample of magnesium carbonate (containing no thermally decomposable impurities) on complete thermal decomposition gave 0.44 g of carbon dioxide gas. The percentage of impurity in the sample is
The correct increasing order of the oxidation state of sulphur in the anions \[\ce{SO^2-_4, SO^2-_3, S2O^2-_4, S2O^2-_6}\] is
Which of the following contains the same number of carbon atoms as in 6 g of carbon-12.
What do you understand by the term oxidation number?
Distinguish between oxidation and reduction.
Balance the following equation by the oxidation number method.
\[\ce{K2Cr2O7 + Kl + H2SO4 -> K2SO4 + Cr2(SO4)3 + I2 + H2O}\]
What is the formula of hydrolith?
In the redox reaction, \[\ce{2MnO^-_4 + SO^{2-}_3 + H2O -> 2MnO^{2-}_4 + SO^{2-}_4 + 2H^+}\], the reductant is:
Which one of the following CANNOT act as a reducing agent?
Which of the following represents a redox reaction?
