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Classify the following redox reactions: ...

Classify the following redox reactions:
a. `N_(2)(g)+O_(2)(g)rarr 2NO(g)`
b. `2Pb(NO)_(3)(s)rarr2PbO(s)+2NO_(2)(g)+(1)/(2)O_(2)(g)`
c. `NaH(s)H_(2)O(l)rarr NaOH(aq)+H_(2)(g)`
d. `2NO_(2)(g)+2overset(ө)OH(aq)rarrNO_(2)^(ө)(aq)+NO_(3)^(ө)(aq)+H_(2)O(l)`

Text Solution

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In reaction (a), the compound nitric oxide is formed by the combination of the elemental substances, nitrogen and oxygen, therefore, this is an example of combination redox reactions. The reaction (b) involves the breaking down of lead nitrate into three components, therefore, this is categorised under decomposition redox reaction. In reaction (c) , hydrogen of water has been displaced by hydride ion into dihydrogen gas. Therefore, this may be called as displacement redox reaction. The reaction (d) involves disproportionation of `NO_(2)` (+4 state) into `NO_(2)^(-)` (+3 state) and `NO_(3)^(-)` (+5 state). Therefore reaction (d) is an example of disproportionation redox reaction
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NCERT ENGLISH-REDOX REACTIONS-EXERCISE
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  2. Assign oxidation number to the underlined elements in each of the foll...

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  3. What are the oxidation number of the underlined elements in each of th...

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  4. Justify that the following reaction are redox reactions: a. CuO(s)+H...

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  5. Fluorine reacts with ice and results in the change: H(2)O(s)+F(2)(g)...

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  6. Calculate the oxidation number of sulphur, chromium, and nitrogen in H...

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  7. Write formulas for the following compounds: a. Mercury (II) chloride...

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  8. Suggest a list of the substances where carbon can exhibit oxidation st...

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  9. While sulphate dioxide and hydrogen peroxide can act as oxidising as w...

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  10. Consider the reaction: a. 6CO(2)(g)+6H(2)O(l)rarr C(6)H(12)O(6)(aq)+...

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  11. The compound AgF(2) is an unstable compound. However, if formed, the c...

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  12. Whenever a reaction between an oxidising agent and a reducing agent is...

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  13. How do you count for the following observations ? (a) Though alkali...

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  14. Identify the substance oxidised substance reduced, oxidising agent, an...

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  15. Consider the reaction: 2S(2)O(3)^(2-)(aq)+I(2)(s) rarr S(4)O(6)^(2-)...

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  16. Justify giving reaction that among halogens, fluorine is the best oxid...

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  17. Why does the following reaction occur? XeO(6)^(4-)(aq)+2F^(Θ)(aq)+6H...

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  18. Consider the reactions: a. H(3)PO(2)(aq)+4AgNO(3)(aq)+2H(2)O(l) rarr...

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  19. Balance the following redox reactions by ion electron method: a. MnO...

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  20. Balance the following equations in basic medium by ion-electron method...

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  21. What sort of informations can you draw from the following reaction? ...

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