l J.13 respectively. Would you expect Peact) in aqueous sodium bicarbonate (NaH0
ID: 1031417 • Letter: L
Question
l J.13 respectively. Would you expect Peact) in aqueous sodium bicarbonate (NaH0: otu on? Ia ot carbonic acid, H2COs, is 6.36. Hint: for each compound, drzw in d-bese Peaction and determine the position of the equilibrium. O2N 4-nitrophenol 2,5-dinitropheno 4. (a) Why was the organic layer washed with saturated, aqueous NacI solution? (b) What was the purpose of using anhydrous calcium chloride? 5. Why must the aqueous solution of benzoic acid be cooled slowly during the crystallization step? 6. What happens if too much water is added during the benzoic acid crystallization process? Explain. 7. Calculate the molarity (mol/L) of 30% aqueous NaOH solution. Asurme that a 30% solution contains What volume of 6.0 M aqueous HCl solution is needed to neutralize 25 mL of 1.3 M aqueous NaOH solution? 30 grams of solute per 70 g of solvent. The density of the solution is 1.33 g/ml. 8.Explanation / Answer
answer
1
a) In NaCl is used to saturated all the organic layer. It will make all non-reacted materials to pass to the "water solution" at the same time of saturating the organic layer
2) When you cristalize benzoic acid
You will be sure to take out all moisture content, And have a better melting point test
3) if you add to much water to benzoic acid plenty of the nahydrous material will get in solution
4) If you dont cool slowly, you wont be forming the crystals. (they need time to form)
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