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A number of phenomenon both physical, ch...

A number of phenomenon both physical, chemical and biologicl are concerned with redox reactions.These rections find extensive use in pharmarceutical industrial and agriculture fields. Answer the following quiesion on the basis of above paragraph.
(a) What is a redox reaction?
(b)Give applications of redox rection in photosynthesis.

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Redox reaction is a chemical reaction in which oxidation and reduction rections take place simultaniously i.e one of the reacting species undergoes oxidation(either the loss of electrons or increase in oxidation number lwhile the other undergoues reductionn(either the loss of electrons or increase in oxidation number while the other lundergoes reduction(eoither the gain of electons or decrrease in oxidationnumber ) .Fro more details consult section 8.2 and 8.9
For answser consult section 8.14
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The rate of a reaction, which may also be called its velocity or speed, can be defined with relation to the concentration of any of the reacting substances, or to that of any product of the reaction. If the species chosen is a reactant which has a concentration c at time t the rate is - dc/dt, while the rate with reference to a product having a concentration x at time t is dx/dt. Any concentration units may be used for expressing the rate, thus, if moles per liter are employed for concentration and seconds for the time, the units for the rate are moles "liter"^(-1) sec^(-1) . For gas reactions pressure units are sometimes used in place of concentrations, so that legitimate units for the rate would be (mm. Hg) sec^(-1) and atm. sec^(-1) The order of a reaction concerns the dependence of the rate upon the concentrations of reacting substances, thus, if the rate is found experimentally to be proportional to the alpha^(th) power of the concentration of one of the reactants A, to the beta^(th) power of the concentration of a second reactant B, and so forth, via., rate kC_(A)^(alpha) C_(B)^(beta)" " (1) the over-all order of the reaction is simply n = alpha +beta + ---------(2) Such a reaction is said to be of the alpha^(th) order with respect to the substance A, the beta^(th) order with respect to B and so on... (Laidler, K. J., & Glasstone, S. (1948). Rate, order and molecularity in chemical kinetics. Journal of Chemical Education, 25(7), 383.) In the following questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage. Assertion: Rate of reaction is a measure of change in concentration of reactant with respect to time. Reason: Rate of reaction is a measure of change in concentration of product with respect to time.

Consider the following redox reaction : H_(2)O + AX + BY rarr HA + YO + BX_(2) (unbalanced) It is also known that oxidation number of X is -2 and neither X nor water is involved in the redox process. (In compound BY, B is cation and consider its oxidation number lt 4 ). Answer the following question based on the information given. If the given reaction is balanced with smallest whole number coefficients, then:

DINESH PUBLICATION-REDOX REACTIONS-Additional Important Question
  1. write the O.N of all the atoms in the folowing well known oxidants: ...

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  2. The difference in the oxidation numbers of two types of sulphul atoms ...

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  3. Define reducing agent.

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  4. Arrange the following in order of increasing O.N of iodine:

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  5. What is the oxidation number of hgydrogen in LiAIH(4)? Name a compound...

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  6. H(2)O(2) changes to O(2) What is the change in oxidation number of oxy...

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  7. What is O.N of carbon in (CN)^(-)ion?

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  8. Which is the anhydrode of HNO(3) "out of" N(2)O, NO "and" N(2)O(5)?

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  9. Out of (HSO(4))^(-) which is a stronger base?

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  10. Identify the oxidant and reductant in the following redox reaction: ...

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  11. Given one expample of disprop[ortionation reaction 2H(3)overset(+1)...

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  12. What is the oxidation state of sodium in sodium amalgam (Na//Hg)?

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  13. What is the oxidation number of chlorine in bleaching powder?

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  14. Is the following reaction a redox reaction is nature? Justify your ans...

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  15. Is it safe to stir 1M AgNO(3) solution with copper spoon? Given:E^(@)A...

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  16. Balance the following redox reaction : Cu+NO(3)^(-)rarrNO(2)+Cu^(2+)...

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  17. (a) Define oxidation. (b) Which is the O.N of sup[lhur in H(2)S and ...

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  18. Define reducing agent.

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  19. What is O.N of Na in Na(2)O(2)?

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  20. A number of phenomenon both physical, chemical and biologicl are conce...

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