What is the ThOD of the following chemicals? Show the balanced stoichiometric equation with your work:

a. 5 mg/L C3H7
b. 0.5 mg/L C6Cl5OH

!Consider the following equation for the above chemical: C6Cl5OH + O2 + H2O —- CO2 + HCl

c. 1 mg/L C12H10

Question

What is the ThOD of the following chemicals?  Show the balanced stoichiometric equation with your work:

a.  5 mg/L C3H7
b. 0.5 mg/L  C6Cl5OH  

!Consider the following equation for the above chemical: C6Cl5OH + O2 + H2O —->  CO2 + HCl

c. 1 mg/L C12H10

anonymous · Answer

anyone?

aaronq · Answer

ThOD = theoretical oxygen demand?

anonymous · Answer

yes

aaronq · Answer

okay, so write balanced equations for the reactions, make a ratio involving the moles of the hydrocarbon, moles oxygen and their respective coefficients (from the balanced equation). 
 
     $\dfrac{n_{hydrocarbon}}{a}=\dfrac{n_{O_2}}{b}$

now you wanna plug the moles of $ C_3H_7$, but youre given a concentration. Do you know the total volume of the system, or do they want your answer in terms of concentration as well?