Phosgene Gas Is Widely Used In Chemical Processing For A Var

1phosgene Gas Is Widely Used In Chemical Processing For a Variety of

Phosgene gas is widely used in chemical processing for a variety of materials. Phosgene can be made by the catalytic reaction between CO and chlorine gas in the presence of a carbon catalyst. The chemical reaction is CO + Cl2 → COCl2. Suppose that you have measured the reaction products from a given reactor and found that they contained 3.00 moles of chlorine, 10.00 moles of phosgene, and 7.00 mols of CO. Calculate the extent of reaction, and using that value, determine the initial amounts of CO and Cl2 that were used in the reaction.

Paper For Above instruction

The synthesis of phosgene (COCl2) from carbon monoxide (CO) and chlorine gas (Cl2) represents a classic example of a chemical reaction where reaction extent and initial reactant quantities are determined based on experimental data. This analysis involves chemical stoichiometry, reaction quotient calculations, and the concept of reaction extent, represented typically by the symbol η (eta). Here, we detail the process for calculating the extent of reaction and initial concentrations based on the given data.

The chemical reaction in question is as follows:

CO + Cl2 → COCl2

which indicates a 1:1 molar ratio between reactants and product. The problem provides the final amounts of chlorine, phosgene, and carbon monoxide after the reaction has occurred, which suggests a need to work backwards to determine the extent of the reacted moles and initial reactants.

The data provided states that after the reaction, the mixture contains 3.00 mol of chlorine, 10.00 mol of phosgene, and 7.00 mol of CO. If we define the initial moles of CO and Cl2 as nCO,i and nCl2,i, and the reaction extent as η, then the relationships are as follows:

  • nCO = nCO,i - η
  • nCl2 = nCl2,i - η
  • nCOCl2 = η

Since the molar ratio of reaction is 1:1, the amount of CO and Cl2 consumed should be equal to η. The product, COCl2, has a molar amount of 10.00 mol, implying that η = 10.00 mol, under ideal circumstances where all product is formed from complete reaction of some initial reactant quantities.

However, it is essential to verify whether this is feasible, given the initial materials. The chlorine after the reaction is 3.00 mol, indicating that initially:

  • nCl2,i = 3.00 mol + η

Similarly, initial CO is:

  • nCO,i = 7.00 mol + η

But since we deduce η from the amount of product (phosgene), which is 10.00 mol, and considering the reaction stoichiometry, the amount of CO and Cl2 that reacted should be 10.00 mol each, provided these were sufficient initially.

Checking the feasibility:

  • Initial moles of CO: nCO,i = 7.00 mol + 10.00 mol = 17.00 mol.
  • Initial moles of Cl2: nCl2,i = 3.00 mol + 10.00 mol = 13.00 mol.

This calculation aligns with the principle that the initial amounts must be at least as large as the consumed quantities, suggesting that the initial CO was 17.00 mol and Cl2 was 13.00 mol.

In conclusion, the extent of reaction η is 10.00 mol, meaning that 10 mol of CO and Cl2 reacted to produce 10 mol of phosgene, with the initial quantities of reactants being approximately 17.00 mol of CO and 13.00 mol of Cl2.

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