A couple of Homework questions

Thread starter alexparker
Start date Mar 14, 2011
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Couple Homework

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To calculate the force of attraction between a K+ and O2- ion separated by 1.5 nm, Coulomb's law should be applied. The equation used is F = k * |q1 * q2| / r², where k is Coulomb's constant, q1 and q2 are the charges of the ions, and r is the distance between them. The charges for K+ and O2- are +1 and -2, respectively, which must be taken into account. The value of A mentioned in the context of the equation Ea = -(A/r) is not necessary for this calculation. The correct approach will yield the attractive force between the ions.

Mar 14, 2011

alexparker

Calculate the force of attraction between a K+ and O2- ion whose centers are separated by a distance of 1.5nm

I think you use this equation Ea= -(A/r)
but I am not sure what A is

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Mar 14, 2011

Kuryakin

You need to use columb's law. Make sure you recognise the charges for each ion aren't equal.

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