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Borax is used as buffer since :...

Borax is used as buffer since :

A

Its aqueous solution contains both the week acid and its salt

B

Its aqueous solution contains `H_(3)BO_(3)`, which is a week acid

C

Its aqueous solution contains equal amount of strong acid and its salt

D

statement that borax is a buffer, is wrong

Text Solution

Verified by Experts

The correct Answer is:
A
`[B_(4)O_(5)(OH)_(4)]^(2-)+5H_(2)O hArr2B(OH)_(3)("weak acid")+2[B(OH_(4))]^(-)`(salt)
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Borax is not used:

Which of the following can be used as a buffer solution ?

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Any buffer solution can be used as a buffer upto two pH units only.

Higher the amount of acid or base used to produce a definite change of pH in a buffer solution,higher will be its buffer capacity. Buffer capacity of solution is maximum under the following conditions: [Salt= [Acid] (in acid buffer), [Salt] = [Base] (in base buffer) pH of a buffer solution lies in the range given below: pH = pk_(a)pm1 , In other words, any buffer solution can be used as buffer up to two pH units only, depending upon the value of pK_(a) , or pK_(b) ,. A buffer is said to be efficient when pH_(a) =pK_(a) , or pOH= pk_(b) Which among the following solution will be the most efficient buffer?

Higher the amount of acid or base used to produce a definite change of pH in a buffer solution,higher will be its buffer capacity. Buffer capacity of solution is maximum under the following conditions: [Salt]= [Acid] (in acid buffer), [Salt] = [Base] (in base buffer) pH of a buffer solution lies in the range given below: pH = pK_(a)pm1 , In other words, any buffer solution can be used as buffer up to two pH units only, depending upon the value of pK_(a) , or pK_(b), . A buffer is said to be efficient when pH =pK_(a) , or pOH= pK_(b) The bulfer capacity is equal to :

Which solution is not a buffer solution ?

Which of the following pairs can used to from a buffer solution ?

The pH of an acidic buffer solution & a basic buffer solution at 25^(@)C is :

RESONANCE ENGLISH-P-BLOCK ELEMENT (BORON AND CARBON FAMILY)-Exercise-2 Part-I : ONLY ONE OPTION CORRECT TYPE
  1. Identify true statement:

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  3. In limited supply of oxygen C & Si are allowed to react at sufficientl...

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  4. 2E+N(2)to2EN (very hard substance) EN+H(2)Oto Acid + pungent smelli...

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  5. Aluminium vessels should not be washed with materials containing washi...

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  6. Select the incorrect statement of the following.

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  7. Which of the following statements is correct for diborane?

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  8. B2H6+NH3toAddition compound (X) overset(450 K)to Y+Z(g) In the above...

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  9. Borazine and benzene show striking similarities in their properties. T...

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  10. Aqueous ammonia is used as a precipitating reagent for Al^(3+) ions as...

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  11. Borax is used as buffer since :

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  12. Which of the following sompound is obtained on heating potassium ferro...

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  13. B(OH)(3)+NaOH to Na[B(OH)(4)](aq). Then addition of which of the fo...

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  14. H(3)BO(3)(s) + aq. NaOH overset(Delta)rarr(X), H(3)BO(3)(s) + "molte...

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  15. SnCl(4) stannic chloride hydrolyses in dilute solution as per given r...

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  16. Amphoteric oxide (X) + 3C+ Cl(2) to Poisonous gas + anhydrous chloride...

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  17. When a solution of sodium hydroxide is addeed in excess to the solutio...

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  18. BF(3) on hydrolysis forms

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  19. Preparation of organosilicones from SiCl(4) involves substituion in fi...

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  20. To get the silicone R(3)Si-(OSiR(2))(n)-SiR(3) having 4Si-O-Si linkage...

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