Multiple choice

The compound used for the preservation of stock solutions is

  1. hafnium(IV) chloride

  2. hexadecacarbonylhexarhodium

  3. hydrazine

  4. hydrazoic acid
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydrazoic acid is a colourless, volatile, and extremely explosive liquid at room temperature and pressure. It is a compound of nitrogen and hydrogen, having chemical formula HN3.It is used primarily for preservation of stock solutions, and as a reagent.

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