the theoretical oxygen demand of 150 mg/l of glutamic acid is 89.14 mg/L.
The gram molecular mass is the mass in grams of a single mole of molecular material. Both gram molecular mass and molar mass are the same things. The main difference is that the mass unit is gram molecular mass. It is possible to express the gram molecular mass (g/mol) in grams or grams per mole (g/mol).
Glutamic acid's gram molecular weight = 147
=>Gram molecular weight of oxygen demand( 4.5 O₂ + 2 O₂ ) = 208
=> Thod (theoretical oxygen demand) = Glutamic acid concentration * Oxygen demand / G.M.W of acid
=> Thod = 63 * 208 / 147 = 89.14 mg/L .
Hence, the theoretical oxygen demand of 63 mg/L glutamic acid is 89.14 mg/L.
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