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The values off pH for pure water at 0^(@...

The values off pH for pure water at `0^(@)C and 25^(@)C` are x and y respectively. Is x greater than or less than y?

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For pure water, `pH=(1)/(2)pK_(w)`. Rise in temperature increases the value of `K_(w).` So, `K_(w)(0^(@)C) lt K_(w)(25^(@)C) &` hence `pK_(w)(0^(@)C) gt pK_(w)(100^(@)C)` as `pK_(w)=-log_(10)K`.
As in case of pure water, `pH=(1)/(2)pK_(w)`, pH of pure water at `0^(@)C` will be greater than that at `25^(@)C`. hence, `x gt y`.
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CHHAYA PUBLICATION-EQUILIBRIUM-WARM UP EXERCISE
  1. Establish the relation betweenn pH, pOH and pK(w) in case of pure wate...

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  2. In cae of pure water or any aqueous solution, show that pH+pOH=14. com...

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  3. The values off pH for pure water at 0^(@)C and 25^(@)C are x and y res...

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  4. pK(w)=12.26 at 100^(@)C. What is the range of pH-scale at this tempera...

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  8. Derive an equation of determine pH of an aqueous NH(3) solution at a c...

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  9. Explain with equation why an aqueous of FeCl(3) is acidic.

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  10. An aqueous solution of (NH(4))(2)SO(4) is acidic. Explain.

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  12. What colour change does a blue or red litmus paper exhibit when it is ...

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  13. What colour change does a blue or red litmus paper exhibit when it is ...

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  14. Why is an aqueous solution of NaNO(3) neutral?

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  15. CH3COONH4 undergoes hydrolysis, although its aqueous solution is neutr...

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  16. Why is aq. Solution of ammonium formate slightly acidic ?

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  18. Give an example of a salt solution whose pH is independent of salt con...

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