Same chapter3 marksDifficulty: Medium
For the reaction N2 + 3H2 ⇌ 2NH3, write the expression for Kc and state its units in terms of concentration.
Equilibrium
3 marksDifficulty: Medium
What is a buffer solution? Give one example of an acidic and one of a basic buffer.
Original Khojo Papers practice question — not from a past board paper.
Answer
A buffer solution resists a change in pH when a small amount of acid or alkali is added to it. An acidic buffer is a mixture of a weak acid and its salt with a strong base, such as acetic acid and sodium acetate. A basic buffer is a mixture of a weak base and its salt with a strong acid, such as ammonium hydroxide and ammonium chloride.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Blood is buffered chiefly by the carbonic acid-bicarbonate system.
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