Rubber · Botany

Which substance is commonly used to coagulate rubber latex?

  1. Common table salt solution
  2. Acetic acid or formic acid
  3. Pure oxygen gas exposure
  4. Calcium carbonate powder
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Correct answer: Acetic acid or formic acid

Weak acids such as acetic acid or formic acid are commonly used to coagulate latex. Coagulation separates the rubber particles from the watery latex serum.

Difficulty: Medium Question 9 of 20

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