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Strength of a weak acid or a weak base d...

Strength of a weak acid or a weak base depends upon its

A

Temperature

B

Nature of solvent

C

Degree of dissociation

D

All the above

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The correct Answer is:
D
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When a salt reacts with water to form acidic (or ) basic solution the process is called salt hydrolysis. The P^(H) of salt solution can be calculated using the following relation P^(H) =(1)/(2) [P^(k_w) +P^(Ka) + log C ] for salt of weak acid and strong base. P^(H) =(1)/(2) [P^(K_w) -P^(K_a) -log C ] for salt of weak base and strong acid , P^(H) =(1)/(2) [P^(K_w) +P^(K_a) - P^(K_b) ] For a salt of weak acid and weak base where .c. represents the concentration of salt . When a weak acid (or) a weak base is not completly neatralised by strong base (or ) strong acid respectively, then formation of buffer takes places. The P^(H) of buffer solution can be calculated using the following relation P^(H) =P^(Ka) +log "" ((["salt")])/(["Acid "]) , P^(OH) =P^(Kb) +log ""(["salt"])/(["base"]) Answer the following questions using the following data pK_a (CH_3COOH) =4.7447 , pK_b (NH_4OH) =4.7447 , P^(K_W) =14. 0.001 M NH_4 Cl aqueous solution has P^(H)

When a salt reacts with water to form acidic (or ) basic solution the process is called salt hydrolysis. The P^(H) of salt solution can be calculated using the following relation P^(H) =(1)/(2) [P^(k_w) +P^(Ka) + log C ] for salt of weak acid and strong base. P^(H) =(1)/(2) [P^(K_w) -P^(K_a) -log C ] for salt of weak base and strong acid , P^(H) =(1)/(2) [P^(K_w) +P^(K_a) - P^(K_b) ] For a salt of weak acid and weak base where .c. represents the concentration of salt . When a weak acid (or) a weak base is not completly neatralised by strong base (or ) strong acid respectively, then formation of buffer takes places. The P^(H) of buffer solution can be calculated using the following relation P^(H) =P^(Ka) +log "" ((["salt")])/(["Acid "]) , P^(OH) =P^(Kb) +log ""(["salt"])/(["base"]) Answer the following questions using the following data pK_a (CH_3COOH) =4.7447 , pK_b (NH_4OH) =4.7447 , P^(K_W) =14. One mole CH_3 COOH and one mole CH_3 COONa are dissolved in water one litre aqueous solution The P^(H) of the resulting solution will be

The percentage degree of hydrolysis of a salt of weak acid (HA) and weak base (BOH) in its 0.1 M solutions is found to be 10% If the molarity of the solution is 0.05M , the percentage hydrolysis of the salt should be :

Guanidine (I) and its conjugate acid (II) are given below along with urea(III) and its conjugate base (IV) Basic properties of I & II compounds are mainly influenced by resonance and the acidity of the bases depends upon lone pair of electrons. The strongest base of the following is

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AAKASH SERIES-IONIC EQUILLIBRIUM-PRACTICE SHEET (EXERCISE-I ) LEVEL -II ( Straight Objective Type Questions )
  1. Which of the following is strong Lewis acid?

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  2. The Lewis acidic strength of SO(3) , when compared to SO(2) , is

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  3. Which of the following is wrong?

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  4. Which of the following statements is true ?

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  5. Strength of a weak acid or a weak base depends upon its

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  6. Among the following, the stronger acid in basic medium is

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  7. (A): HCl is not acidic in benzene. (R): Benzene does not accept prot...

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  8. What is the decreasing order of strength of the bases OH, NH(2) , H-C=...

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  9. Which of the following is relatively stronger base? P^(kb) values are...

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  10. The cquilibrium constant for the reaction HONO(aq)+ CN(sp)rarr HCN((aq...

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  11. Which of the following has been arranged correctly in increasing order...

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  12. Based on the following equilibrium reactions HNO(2)+HF rarr H(2)F^(+...

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  13. Which of the following species formed in acid base reactions can act a...

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  14. Any species capable of accepting a lone pair of electrons acts as a le...

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  15. Any species capable of accepting a lone pair of electrons acts as a le...

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  16. Any species capable of accepting a lone pair of electrons acts as a le...

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  17. Weak acids dissociate partially in aqueous medium. If any common ion i...

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  18. Weak acids dissociate partially in aqueous medium. If any common ion i...

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  19. {:("List-I" ,"List-II"),((A) "CC"I(4),P. "Lewis acid"),((B)AICI(3),"Q....

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