a) What is the electrostatic force between a Mg2+ ion and a Cl- ion in water when they are 1 nm apart? b) Which distance should the two ions have to experience the same attractive force as in (a) but now in vacuum? Use relative permittivity = 80 for water.

a) What is the electrostatic force between a Mg2+ ion and a Cl- ion in water when they are 1 nm apart? b) Which distance should the two ions have to experience the same attractive force as in (a) but now in vacuum? Use relative permittivity = 80 for water.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter7: Electric Potential

Section: Chapter Questions

Problem 106CP: Three Na+ and three Cl ions are placed alternately and equally spaced around a circle of radius 50...

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Question

a) What is the electrostatic force between a Mg2+ ion and a Cl- ion in water when they are 1 nm apart?
b) Which distance should the two ions have to experience the same attractive force as in (a) but now in vacuum?

Use relative permittivity = 80 for water.

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