A buffer solution is prepared by adding NH4Cl to a solution of NH3 (ammonia). what happens if NaOH is added?
1 answer:
<u>Answer:</u> The reaction proceeds in the backward direction.
<u>Explanation:</u>
A buffer is a solution that maintains the pH of the solution and resists any significant changes of pH on the addition of acid or alkali.
A buffer solution of is prepared. It is a basic buffer as it is formed by the combination of a weak base
and its conjugate acid
When a strong base (NaOH) is added to this buffer solution, the ammonium ions releases hydrogen ion to the solution which then combines with the hydroxide ions to form water and ammonia in a solution. Thus, maintaining the pH of the buffer.
The given chemical equation follows:
Hence, the reaction will proceed in the backward direction.
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<u>Answer: </u>The correct answer is Option b.
<u>Explanation:</u>
Oxidizing agent is defined as the chemical reagent which helps the other chemical compound to get oxidized and itself gets reduced. The oxidation state for these species gets reduced because they are undergoing reduction reaction.
For the given chemical equation:
Oxidation state of Chromium is getting reduced from +6 to +3 and oxidation state of chlorine getting increased from -1 to 0.
Hence, acts like and oxidizing agent because it is itself getting reduced to
Therefore, the correct answer is Option b.