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Explain the blue colour of CuSO(4).5H(2)...

Explain the blue colour of `CuSO_(4).5H_(2)O`

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`Cu^(2+)` ion`(3d^(9))` absorbs red light from the visible region, for the promotion of `3d` electrons, the ions reflect blue light and appear blue.
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In CuSO_(4) · 5H_(2)O

How many sp^(3) hybridised atoms are there in one molecule of CuSO_(4).5H_(2)O ?

Draw structure CuSO_(4).5H_(2)O

When 1 mole of anhydrous CuSO_(4) is dissolved in excess of water, -66.4 kJ heat is evolved. When one mole of CuSO_(4).5H_(2)O is dissolved in water, the heat change is +11.7 kJ. Calculate enthalpy of hydration of CuSO_(4) (anhydrous).

When 1 mole of anhydrous CuSO_(4) is dissolved in excess of water, -66.4 kJ heat is evolved. When one mole of CuSO_(4).5H_(2)O is dissolved in water, the heat change is +11.7 kJ. Calculate enthalpy of hydration of CuSO_(4) (anhydrous).

Assertion : CuSO_(4).5H_(2)O has one hydrogen-bonded molecule of water. Reason : The four molecules of water are coordinated in CuSO_(4).5H_(2)O .

Write chemical equation for the preparation of CuSO_(4)*5H_(2)O in the laboratory.

Coordination number of Cu^(2+) in CuSO_(4).5H_(2)O is .

If the heat fo dissolution of anhydrous CuSO_(4) and CuSO_(4).5H_(2)O is -15.89 kcal and 2.80 kcal , respectively, then the heat of hydration fo CuSO_(4) to form CuSO_(4).5H_(2)O is

A mixture of CuSO_(4).5H_(2)O and MgSO_(4).7H_(2)O was heated until all the water was driven off If 5.0g of mixture gave 3g of anhydrous salts, what was the percentage by mass of CuSO_(4).5H_(2)O in the original mixture :

RESONANCE ENGLISH-D BLOCK ELEMENTS-EXERCISE-3 PART-III
  1. Explain the blue colour of CuSO(4).5H(2)O

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  2. Of the ions Ag^(+),Co^(2+) and Ti^(4+) ,which ones will be coloured in...

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  3. Name one ore each of manganese and chromium.

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  4. In the transition series, with an increase in atomic number, the atomi...

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  5. Why Zr and Hf or Nb and Ta exhibit similar properties? Or Zirconium ...

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  6. Why among the lanthanides Ce,(III), can be easily oxidised to Ce(IV) (...

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  7. Explain why E^(@) for Mn^(3+)//Mn^(2+) couple is more positive than th...

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  8. What is the effect of increasing pH on K2Cr2O7 solution?

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  9. What is the basic difference between the electronic configurations of ...

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  10. Why do transition elements shows variable oxidation states?

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  11. Give reasons for each of the following: (i) Size of trivalent lantha...

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  12. The E^(@) value in respect of the electrodes chromium (Z=24), manganes...

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  13. The outer electronic configuration of two members of the lanthanoid se...

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  14. Assign reason for each of the following statement: (i) The largest n...

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  15. Write all possible oxidation states of an element having atomic number...

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  16. Why is +2 oxidation state of manganese quite stable while the same is ...

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  17. How is the variability in oxidation states of transition metals differ...

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  18. Write the electronic configuration of the element with atomic number 1...

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  19. (a) Describe the general trends in the following properties of the fir...

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  20. How would you account for the fact that the transition metals and thei...

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  21. Assign reasons for the following : (i) The enthalpies of atomisatio...

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