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Why the reaction between nitric acid and...

Why the reaction between nitric acid and copper is slow in the beginning but fast after some time?

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AAKASH SERIES-SURFACE CHEMISTRY-EXERCISE - 5.2
  1. The decolourisation of permanganate with oxalate is initially slow, bu...

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  2. How the colloids are classified on the basis of type of particles in d...

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  3. Explain the purification of colloids by dialysis and ultrafiltration.

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  4. What is ultrafiltration ?

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  5. Arrange the following substances in order of increasing ability to coa...

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  6. A catalyst lowered the energy of activation by 25 kJ mol^(-1) .How man...

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  7. Presence of catalysis does not change equilibrium constant. Why?

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  8. Why the reaction between nitric acid and copper is slow in the beginni...

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  9. During the micelle formation how the enthalpy entropy and Gibbes energ...

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  10. Gold number of gelatin is 0.01 , Calculate the weight of gelatin to be...

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  11. The surface are of activated charcoal is 10^(3)m^(3)g^(-1).If effectiv...

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  12. 20% surface sites have adsorbed N2. On heating N2 gas is evolved from ...

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  13. A molecule of nitrogen occupies 1.62 xx 10^(-19) m^(2). The volume of ...

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  14. What is electro osmosis ?

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  15. 0.1 M AlCl3 solution is more effective than 0.1M NaCl solution in coag...

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  16. For coagulation of 20ml of a negative sol Xml of 1M NaCl , Y ml of 1M...

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  17. One gram of a protective colloid 'X' is to be added to 200ml of gold s...

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  18. Soap forms a true solutions a lower concentration. but forms a colloid...

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  19. Soap does not work properly in aqueous solutions with acidic pH values...

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  20. What is de-emulsification process ? How is it performed ?

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