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NTA Abhyas NEET2020ChemistryIonic EquilibriumPractice

How many of the following combination act as buffer ( 1 ) HCl + NaOH ( 2 ) C H 3 C O O N a + C H 3 C O O H ( 3 ) H 2 S O 4 + N a 2 S O 4 ( 4 ) H 2 C O 3 + N a O H ( 5 ) N a 2 B 4 O 7 + H 3 B O 3 ( 6 ) N H 4 O H + N H 4 C l

Options

  1. A3
  2. B4
  3. C2
  4. D6

Correct answer

B. 4

Step-by-step solution

Buffer are (1) C H 3 C O O N a + C H 3 C O O H (2) H 2 C O 3 + N a O H (3) N a 2 B 4 O 7 + H 3 B O 3 (4) N H 4 O H + N H 4 C l

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