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प्रश्न
Which of the following is not an example of redox reaction?
पर्याय
\[\ce{CuO + H2 -> Cu + H2O}\]
\[\ce{Fe2O3 + 3CO -> 2Fe + 3CO2}\]
\[\ce{2K + F2 -> 2KF}\]
\[\ce{BaCl2 + H2SO4 -> BaSO4 + 2HCl}\]
उत्तर
\[\ce{BaCl2 + H2SO4 -> BaSO4 + 2HCl}\]
Explanation:
Redox reaction is defined as the simultaneous oxidation and reduction of reacting species. Thus, change in oxidation state will decide whether a reaction is redox or not. Thus, assigning the oxidation states as:
(i) \[\ce{CuO + H2 -> Cu + H2O}\]
Here, oxidation of H and reduction of \[\ce{Cu}\] is taking place.
(ii) \[\ce{Fe2O3 + 3CO -> 2Fe + 3CO2}\]
Here, oxidation of \[\ce{C}\] and reduction of \[\ce{Fe}\] is taking place.
(iii) \[\ce{2K + F2 -> 2KF}\]
Here, the oxidation of \[\ce{K}\] and reduction of \[\ce{F}\] is taking place.
(iv) \[\ce{BaCl2 + H2SO4 -> BaSO4 + 2HCl}\]
This is not a redox reaction, but it is a double displacement reaction.
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संबंधित प्रश्न
Justify that the following reaction is redox reaction:
\[\ce{Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g)}\]
Justify that the following reaction is redox reaction:
\[\ce{2K(s) + F2(g) → 2K+F– (s)}\]
Identify the substance oxidised, reduced, oxidising agent and reducing agent for the following reaction:
\[\ce{Pb(s) + PbO2(s) + 2H2SO4(aq) → 2PbSO4(s) + 2H2O(l)}\]
What sorts of informations can you draw from the following reaction ?
\[\ce{{(CN)}_{2(g)} + 2OH-_{(aq)} -> CN-_{(aq)} + CNO-_{(aq)} + H_2O_{(l)}}\]
Arrange the following metals in the order in which they displace each other from the solution of their salts.
Al, Cu, Fe, Mg and Zn.
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Reason (R): The oxygen of peroxide is in –1 oxidation state and it is converted to zero oxidation state in \[\ce{O2}\] and –2 oxidation state in \[\ce{H2O}\].
Which of the following statement is CORRECT for the decomposition reaction of KClO3?
\[\ce{2KClO3 → 2KCl +3O2}\]
Which of the following examples does not represent disproportionation?
Which of the following reactions is the metal displacement reaction? Choose the right option.
In an experiment O3 undergo decomposition as \[\ce{O3 -> O2 + O}\] by the radiations of wavelength 310 Å. The total energy falling on the O3 gas molecules is 2.4 × 1026 eV and quantum yield of the reaction is 0.2.
The volume strength of the H2O2 solution which is obtained from reaction of 1 l H2O and nascent oxygen [O] obtained from the above reactions is (Assuming no change in volume of H2O)
\[\ce{H2O + O -> H2O2}\]
[Given: Na (Avogadro's No.) = 6 × 1023]
