5. Given that: give Calculate the 66.6 g of SO mass of AsS required to react wit

Question

5. Given that: give Calculate the 66.6 g of SO mass of AsS required to react with excess O to 6, Given the following reaction, calculate the % AE. The major product is CeHNO Cl C&HsCI;+ HNO 7. Aspirin (CoHsOs) is prepared by the reaction of salicylic acid (C-H Os) with acetic anhydride (C4HeOs). A byproduct of the reaction is acetic acid (C2H4O2).The equation of the reaction is given below: a. How many grams of Aspirin can be produced from the reaction of 10.0 g of salicylic acid and 10.0 g of acetic anhydride? 1DA-2 8/136.03

Explanation / Answer

Q5)

The reaction is

As4S6 + 9O2 ---- As4O6 + 6SO2

molar mass of O2 = 32 gm/mol

number of moles of O2 in 66.6g = Mass/molar mass = 66.6/32 = 2.08125 moles

molar mass of As4S6 = 4 * molar mass of As + 6 * molar mass of S = 4 * 74.92 + 6 * 32.065 = 492.1 gm/mol

number of moles of As4S6 required = 1/9 * moles of O2 = 1/9 * 2.08125 = 0.23125 moles

Mass of As4S6 required = 0.23125 mol * 492.1 gm/mol = 113.79 gms

6) Data is incomplete, what percentage needs to be calculated clarify the problem

7)

Since masses are same, hence salicylic acid will be limiting reagent because of high molar mass

Molar mass of Salicylic acid = 12 * 7 + 6 * 1 + 3 * 16 = 138 gm/mol

number of moles of salicylic acid (limiting reagent = 10/138 moles

Molar Mass of aspirin = 9 * 12 + 8 * 1 + 4 * 16 = 180 gm/mol

Mass produced = 10/138 * 180 = 13.043 grams

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