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In electrophoresis, what determines the direction of ion movement?

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Question: In electrophoresis, what determines the direction of ion movement?

Options:

  1. Molecular weight
  2. Charge of the ion
  3. Solubility
  4. Temperature

Correct Answer: Charge of the ion

Solution: 

The direction of ion movement in electrophoresis is determined by the charge of the ion; cations move towards the cathode and anions towards the anode.

In electrophoresis, what determines the direction of ion movement?

Practice Questions

Q1
In electrophoresis, what determines the direction of ion movement?
  1. Molecular weight
  2. Charge of the ion
  3. Solubility
  4. Temperature

Questions & Step-by-Step Solutions

In electrophoresis, what determines the direction of ion movement?
  • Step 1: Understand that electrophoresis is a technique used to separate charged particles, like ions, in a gel or solution.
  • Step 2: Know that ions can have a positive charge (cations) or a negative charge (anions).
  • Step 3: Remember that in electrophoresis, there are two electrodes: the anode (positive) and the cathode (negative).
  • Step 4: Realize that cations, which are positively charged, will move towards the cathode (negative electrode).
  • Step 5: Understand that anions, which are negatively charged, will move towards the anode (positive electrode).
  • Step 6: Conclude that the charge of the ion determines its direction of movement in electrophoresis.
  • Charge of Ions – The movement of ions in electrophoresis is dictated by their charge; positively charged ions (cations) move towards the negatively charged electrode (cathode), while negatively charged ions (anions) move towards the positively charged electrode (anode).
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