$\overline{){\mathbf{F}}{\mathbf{=}}\frac{{\mathbf{kq}}_{\mathbf{1}}{\mathbf{q}}_{\mathbf{2}}}{{\mathbf{d}}^{\mathbf{2}}}}$

$\mathbf{W}\mathbf{=}\mathbf{F}\mathbf{\times}\mathbf{d}\mathbf{=}{\mathbf{F}}{\mathbf{=}}\left(\frac{{\mathrm{kq}}_{1}{q}_{2}}{{d}^{\overline{)2}}}\right)\overline{)\left(d\right)}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\overline{){\mathbf{W}}{\mathbf{=}}\mathbf{\left(}\frac{{\mathbf{kq}}_{\mathbf{1}}{\mathbf{q}}_{\mathbf{2}}}{\mathbf{d}}\mathbf{\right)}}$

A sodium ion, Na^{+}, with a charge of 1.6 x 10^{–19} C and a chloride ion, Cl^{–}, with charge of -1.6 x 10^{–19}, are separated by a distance of 5.3 nm. How much work would be required to increase the separation of the two ions to an infinite distance?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Coulomb's Law concept. If you need more Coulomb's Law practice, you can also practice Coulomb's Law practice problems.

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Based on our data, we think this problem is relevant for Professor Alaghmand's class at HU.