Question

Which of the following combinations is not suitable for making a buffer? a. HCl and NaCl...

Which of the following combinations is not suitable for making a buffer?

a. HCl and NaCl

b. NaH2PO4 and Na2HPO4

c. NH4Cl and NH3

d. H3PO4 and NaH2PO4

e. Na2CO3 and NaHCO3

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Answer #1

a. HCl and NaCl

Acid buffer solution: A mixture of weak acid and it's salt with satrong base is called acid buffer solution.

NaH2PO4 and Na2HPO4, H3PO4 and NaH2PO4,Na2CO3 and NaHCO3   are acid buffer solution.

Basic buffer solution: A mixture of weak base and it's salt with strong acid is called basic buffer solution.

NH4Cl and NH3

                                 

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