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A strong base give more number of OH^- i...

A strong base give more number of `OH^-` ions than a weak base of same concentration. True or False

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Enthalpy of neutralzation is defined as the enthalpy change when 1 mole of acid /base is completely neutralized by base // acid in dilute solution . For Strong acid and strong base neutralization net chemical change is H^(+) (aq)+OH^(-)(aq)to H_(2)O(l) Delta_(r)H^(@)=-55.84KJ//mol DeltaH_("ionization")^(@) of aqueous solution of strong acid and strong base is zero . when a dilute solution of weak acid or base is neutralized, the enthalpy of neutralization is somewhat less because of the absorption of heat in the ionzation of the because of the absorotion of heat in the ionization of the weak acid or base ,for weak acid /base DeltaH_("neutrlzation")^(@)=DeltaH_("ionization")^(@)+ Delta _(r)H^(@)(H^(+)+OH^(-)to H_(2)O) What is DeltaH^(@) for complate neutralization of strong diacidic base A(OH)_(2)by HNO_(3) ?

Enthalpy of neutralzation is defined as the enthalpy change when 1 mole of acid / / base is completely neutralized by base // acid in dilute solution . For Strong acid and strong base neutralization net chemical change is H^(+) (aq)+OH^(-)(aq)to H_(2)O(l) Delta_(r)H^(@)=-55.84KJ//mol DeltaH_("ionization")^(@) of aqueous solution of strong acid and strong base is zero . when a dilute solution of weak acid or base is neutralized, the enthalpy of neutralization is somewhat less because of the absorption of heat in the ionzation of the because of the absorotion of heat in the ionization of the weak acid or base ,for weak acid /base DeltaH_("neutrlzation")^(@)=DeltaH_("ionization")^(@)+ Delta _(r)H^(@)(H^(+)+OH^(-)to H_(2)O) If enthalpy of neutralization of CH_(3)COOH by NaOH is -49.86KJ // mol then enthalpy of ionization of CH_(3)COOH is:

If the emitter and base of n-p-n transistor have same doping concentration, explain, how will the collector and base currents be affected.

MODERN PUBLICATION-ACID, BASES AND SALTS-EXERCISE
  1. Blood is more acidic than urine (pH=5.6). True or False

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  2. All acids ionise to give H3O^(+) ions. True or False

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  3. A strong base give more number of OH^- ions than a weak base of same c...

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  4. Aluminium chloride solution has pH more than 7. True or False

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  5. Sodium acetate is salt of strong acid and weak base. True or False

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  6. Fill ups Acids on ionisation give………………..ions.

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  7. What happens when blue litmus paper is dipped in a cold drink?

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  8. Fill ups pH of acids is …………….than 7 while that of bases is …………..than...

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  9. Fill ups A salt is made when the ………….in an acid is replaced by a………….

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  10. Name the two main consituents of baking powder.

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  11. Fill ups The chemical formula of washing soda is………….. .

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  12. Fill ups The pH of CuSO4(aq) solution is……………. .

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  13. Fill ups The chemical name of bleaching powder is……………. .

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  14. Fill ups Plaster of Paris is obtained by heating…………… .

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  15. Fill ups Bee sting contains……………….acid.

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  16. Fill ups Vinegar contains………………acid.

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  17. Fill ups Stomach has pH nearly equal to…………….due its secretion of……………...

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  18. On putting a few drops of a liquid on a pH strip, the colour of pH str...

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  19. When a few drops of universal indicator were added to a dilute solutio...

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  20. Dilute hydrochloric acid is added to sodium carbonate. It is observed ...

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