(Solved): Standard Addition Analysis of Chloride Calculate the concentration (Cs) of chloride in an 100.0mL ...

Standard Addition Analysis of Chloride Calculate the concentration (Cs) of chloride in an $$100.0\mathrm{mL}$$ unknown solution with a measured potential of $$56.8\mathrm{mV}$$. The sample was spiked with $$5.00\mathrm{mL}$$ of $$0.100\mathrm{mol}/\mathrm{L}$$ chloride and the potential was measured to be $$7.2\mathrm{mV}$$. If the experimental slope is $$49\mathrm{mV}/$$ decade, what is the concentration of the chloride in the original solution in ppm? $${\mathrm{MMCl}}^{?}=35.44\mathrm{g}/\mathrm{mol}$$ Report your answer in $$\mathrm{mg}/\mathrm{L}$$. Report your answer to 2 decimal places