What is the theoretical oxygen demand of 300 mg/L glucose solutio

| What is the theoretical oxygen demand of 300 mg/L glucose solution?

A. 320 mg/L

B. 360 mg/L

C. 380 mg/L

D. 400 mg/L

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Concept:

BOD, COD, TOC and TOD all are associated with organic content of water. COD is related to both inorganic and organic content of water.

Chemical Oxygen Demand(COD)	Biological oxygen Demand(BOD)	Theoretical Oxygen Demand	Total Organic carbon
The amount of oxygen required by the bio degradable and non-bio-degradable organic matter present in waste water.	The amount of oxygen required by the bio degradable organic matter present in waste water.	Through chemical reaction equations, the exact amount of organic matter present represent Theoretical Oxygen Demand.	It is a form of presentation of amount of organic matter in form of its carbon content.

Formula of glucose → C₆ H₁₂ O₆

C₆ H₁₂ O₆ + 6O₂ → 6CO₂ + 6H₂O

MW of glucose = (12 × 6 + 12 + 16 × 6)

= 180 gm

180 gm of glucose requires → 192 gm of oxygen

So 300 mg / l of glucose will req \(\to \frac{{192}}{{180}} \times 300\)

= 320 mg / l of oxygen

So Thod = 320 mg / l