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In this lab exercise a solution containing K+ is passed down an ion exchange column containing a cation exchange resin in the acid form. The K+ ions in the solution replace the resin bound H3O+ ions which elute from the column and then are titrated. This means that the column now holds the K+ ions. To use the column again we must "recharge" the column to remove K+ ions.
A 0.166 gram solution of KxFe(C2O4)yzH2O is dissolved in water and the solution is passed down a column containing a cation exchange resin in the acid form. The eluted solution is then titrated with a standard NaOH solution to the first equivalence point. Experimentally it required 11.72 mL of a 0.112 M NaOH solution to reach the first equivalence point.
Calculate the number of moles of K+ in the weighted sample.
Calculate the mass (grams) of K+ in the weighted sample.
Calculate percent of potassium in the weighted sample.
Show all the steps in the mechanism for the following reaction, When benzene is mixed with deuterated sulfuric acid, deuterium is slowly incorporated onto the ring. Show the mechanism for this reaction and explain how this relates the sulfonation of ..
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