Given that: As_4S_6 + 9O_2 rightarrow As_4S_6 + 6SO_2 Calculate the mass of As_4

Question

Given that: As_4S_6 + 9O_2 rightarrow As_4S_6 + 6SO_2 Calculate the mass of As_4S_6 required to react with excess O_2 to give 66.6 g of SO_2. Given the following reaction, calculate the % AE. The major product is C_6H_4NO_2Cl. C_6H_5Cl + HNO_3 rightarrow C_6H_4NO_2Cl + H_2O Aspirin (C_9H_8O_4) is prepared by the reaction of salicylic acid (C_7H_6O_3) with acetic anhydride (C_4H_6O_3). A byproduct of the reaction is acetic acid (C_2H_4O_2).The equation of the reaction is given below: C_7H_6O_3 + C_4H_6O_3 rightarrow C_9H_8O_4 + C_2H_4O_2 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? Assuming Aspirin is the most important product, calculate the % AE of the reaction.

Explanation / Answer

Q5.

as4S6 + 9O2 --> As4O6 + 6SO2

find mol of SO2:

MW of SO2 = 64.066 g/mol

mol = mass/MW = 66.6 g /64.066 g/mol = 1.03955 mol of SO2

so...

ratio is 1 mol of As4S6 for 6 mol of SO2

so

1.03955 mol --> 1/6 * 1.03955 = 0.1732 mol of As4S6

mass = mol*MW

Mw of As4S6 = 492.0764 g/mol

so...

mass = mol*MW = 0.1732 *492.0764 = 85.227 g of As4S6

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