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What is the effective pH range of a buffer (relative to the pKaof the weak acid component)? What is the effective range of abuffer (relative

What is the effective pH range of a buffer (relative to the pKaof the weak acid component)? What is the effective range of abuffer (relative to the of the weak acid component)?

a) pKa±4

b) pKa±2

c) pKa±3

d) pKa±1

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