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Between Cu((aq))^(2+) and Cu((aq))^(+) w...

Between `Cu_((aq))^(2+) and Cu_((aq))^(+)` which is more stable?

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`Cu^(2+)(aq)`
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Cu_(2)Cl_(2) and CuCl_(2) in aqueous mdeium

Predict whether the reaction 2Ag_((s))+Zn_((aq))^(2+)rarr 2Ag_((aq))^(+)+Zn_((s)) is feasible or not.

a) For the electrochemical cell represented as: Cu_((s))|Cu_((aq))^(2+)||Ag_((aq))^(+)|Ag_((s)) , write the half cell reaction that occurs at (i) anode (ii) cathode

Which one of the following condition will increase the voltage of the cell represented by the equation : Cu_((s))+2Ag_((aq))^(+)hArr Cu_((aq))^(+)+2Ag_((s))

For a given data : E_(Mg^(2+) // Mg)^(@) = -2.37 V , E_(Cu^(2+)// Cu)^(@) = + 0.34 V Calculate the emf of the cell in which the following reaction takes place . underset((0.0001 M)) ( Mg_((s))) + Cu_((aq))^(2+) underset((0.001M)) to Mg_((aq))^(2+) + Cu_((s))

The emf of the half cell Cu_((aq))^(2+)//Cu_((s)) containing "0.01 M Cu"^(2+) solution is +0.301 V . Calculate the standard emf of the half cell.

Give reasons: i) Cu^(+2) (aq) is more stable than Cu^(+) ii) Ionisation enthalpy increases along transition elements from left to right iii) Zn has highest value for E^(@)(M^(3+)//M^(2+)) among 3d series elements

The standard reduction potential at 298 K for the following half cell reactions are given below Zn^(2+)(aq)+2e^(-) to Zn(s) " " E^(@)=-0.762V Cr^(3+)(aq)+3e^(-)toCr(s) " " E^(@)=-0.740V 2H^(+)(aq)+2e^(-) toH_(2)(g) " " E^(@)=0.0V Fe^(3+)(aq)+e^(-) toFe^(2+)(aq) " " E^(@)=0.77V . Which is the strongest reducing agent ?

SUBHASH PUBLICATION-THE 'd' - AND 'f' - BLOCK ELEMENTS -Question and Answer
  1. Calculate the spin only magnetic moment of Fe^(2+)

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  2. Which element of 3d series exhibits maximum oxidation state?

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  3. Between Cu((aq))^(2+) and Cu((aq))^(+) which is more stable?

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  4. Transition metals are very hard and have high melting and boiling poin...

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  5. d' block elements shows variable oxidation states Why.

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  6. Name a transition element which does not exhibit variable oxidation st...

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  7. Sc^(3+) ions are colourless where as V^(3+) ions are coloured. Give re...

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  8. Why Sc^(3+) salts are colourless whereas Cr^(3+) salts are coloured.

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  9. Why Ti^(4+) is colourless where as Cr^(3+) salts are coloured.

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  10. Name the electrode system which have positive E^(0) value in 3d series...

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  11. Give any two reasons for the formation of large number of complex comp...

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  12. Cu^(2+) ions are coloured but Zn^(2+) ions are colourless. Give reason...

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  13. Transition elements shows catalytic property. Give two reason.

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  14. What are interstitial compounds?

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  15. How is potassium dichromate prepared from chromite are ?

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  16. Show that chromates and dichromates are interconvertible.

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  17. Give the structure of chromate ion?

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  18. Give two example to show that potassium dichromate is an oxidising age...

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  19. How is potassium permanganate manufactured from MnO(2) (pyrolusite)?

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  20. Name a compound which is isostructural with KMnO(4).

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