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Answer:
the change in the electrical potential energy of a single potassium ion as it moves across the membrane is 1.12941 × 10⁻²⁰ J
Explanation:
The formula used in determining the change in the electrical potential energy can be expressed by the relation.
Charge in electrical Potential energy =
where q = the potassium ion
q = 18 electrons and 19 protons
q = 19-18 = 1 electron
1 electron = 1.602 × 10⁻¹⁹ Coulombs
Thus;
the potential inside the cell is −70.5 mV
= -70.5 × 10⁻³ V
∴ Charge in electrical Potential energy =
Charge in electrical Potential energy =
Charge in electrical Potential energy = 1.12941 × 10⁻²⁰ J
Thus; the change in the electrical potential energy of a single potassium ion as it moves across the membrane is 1.12941 × 10⁻²⁰ J