Discussion Overview
The discussion revolves around determining the molecular formula of the insecticide dieldrin based on experimental data involving combustion products. Participants explore the calculation of moles from the combustion of a sample and the implications of the given stoichiometric relationships.
Discussion Character
- Homework-related
- Mathematical reasoning
- Debate/contested
Main Points Raised
- One participant presents a sample of dieldrin and the products of its combustion, seeking assistance in deriving the molecular formula.
- Another participant suggests converting the masses of CO2 and H2O produced into moles to help determine the moles of carbon, hydrogen, and oxygen.
- A participant shares their calculation attempt, arriving at a molecular formula of C6H4O14Cl3, but notes that the calculated molar mass does not match the expected value of 381 g/mol.
- There is a discrepancy noted by the same participant regarding the calculation of moles of oxygen derived from CO2 and H2O, leading to uncertainty about which value is correct.
- One participant cites an online source claiming the molecular formula of dieldrin is C12H8Cl8O, which is challenged for not adhering to the provided stoichiometric relationship of chlorine atoms being half that of carbon atoms.
- A later reply corrects the previous online claim, stating the molecular formula is C12H8Cl6O, but this still raises questions about the initial conditions given in the problem.
Areas of Agreement / Disagreement
Participants do not reach a consensus on the correct molecular formula for dieldrin, with multiple competing views and calculations presented. There is also uncertainty regarding the correct method for calculating the moles of oxygen.
Contextual Notes
Participants express limitations in their calculations, particularly regarding the differing amounts of oxygen derived from CO2 and H2O. The discussion also highlights the dependence on the initial conditions and assumptions provided in the problem.
