Multiple choice

What component of the eggshell acquires extra Hydrogen ions that bind to the to the dye?

  1. calcium

  2. vitamins

  3. proteins

  4. potassium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The cuticle of an eggshell is composed of proteins. In an acidic environment, the amino groups in these proteins acquire extra hydrogen ions (become protonated), giving them a positive charge that strongly attracts and binds the negatively charged dye molecules.

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