You are attempting to recrystallize a crude product mixture. You add the appropr

Question

You are attempting to recrystallize a crude product mixture. You add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. However, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? Choose all correct answers. A) Place the flask in an ice bath. B) Swirl the contents of the flask. C) Add a small seed crystal of the desired product. D) Scratch the inside of the glassware using a stir rod. It can be multiple choices

Explanation / Answer

The question is based on Lechatlier Principle,(B OPTION is the correct answer)

A)Placing the flask in a ice bath decreases the rate of reaction and product decreases(since temparature decreases)

B)It agitates the reaction and increases the rate of reaction hence the product quantity increases.

C) According to Lechatlier Principle if you increase the reactant quantity the products increases ,if we increase the quantity on product side rate of reaction decreases and product quantity decreases.

D) It does nothing.

Related Questions

Navigate

• Browse (All)
• Browse Y
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.