A researcher wishes to obtain a glycoside (an organic compound) from an aqueous plant extract using the solvent extraction technique. She therefore performs the following steps: Step 1: An aqueous...


A researcher wishes to obtain a glycoside (an organic compound) from an aqueous plant extract<br>using the solvent extraction technique. She therefore performs the following steps:<br>Step 1: An aqueous solution (100 mL) containing 7 g of the glycoside was shaken with 50 mL of<br>ethyl acetate.<br>Step 2: The resulting aqueous layer from Step 1 was further shaken with 50 mL of<br>dichloromethane.<br>Given that:<br>Kp for the glycoside in ethyl acetate-water = 0.8<br>Kp for the glycoside in dichloromethane-water = 0.9<br>Calculate the total mass of glycoside extracted.<br>If the molar mass of the glycoside = 784.3 g/mol, calculate the molar concentration of the<br>glycoside remaining in the aqueous layer after each extraction.<br>

Extracted text: A researcher wishes to obtain a glycoside (an organic compound) from an aqueous plant extract using the solvent extraction technique. She therefore performs the following steps: Step 1: An aqueous solution (100 mL) containing 7 g of the glycoside was shaken with 50 mL of ethyl acetate. Step 2: The resulting aqueous layer from Step 1 was further shaken with 50 mL of dichloromethane. Given that: Kp for the glycoside in ethyl acetate-water = 0.8 Kp for the glycoside in dichloromethane-water = 0.9 Calculate the total mass of glycoside extracted. If the molar mass of the glycoside = 784.3 g/mol, calculate the molar concentration of the glycoside remaining in the aqueous layer after each extraction.

Jun 11, 2022
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