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Chemistry-

General

Easy

Question

Which of the following is a buffer?

$N a O H + C H_{3} C O O H$
$N a O H + N a_{2} S O_{4}$
$K_{2} S O_{4} + H_{2} S O_{4}$
$N H_{4} O H + N a O H$

The correct answer is: $N a O H plus C H subscript 3 end subscript C O O H$

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