The Beer-Lambert law relates the absorption of light by a solution to the properties of the solution according to the following equation: _A_ = _ε bc_, where _ε_ is the molar absorptivity of the absorbing species, _b_ is the path length, and _c_ is the concentration of the absorbing species. In this video, we 'll use the Beer-Lambert law to calculate the concentration of KMnO₄ in an unknown soluti
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