Answer to Question #126385 in Biochemistry for Tom

Question #126385
How to determine the kJ of energy obtained from 1 mole of NADH?
Expert's answer

The net gain from one cycle is "3NADH" and "1FADH_2" as hydrogen- (proton plus electron)-carrying compounds and "1" high-energy GTP, which may subsequently be used to produce ATP. Thus, the total yield from "1" glucose molecule ("2" pyruvate molecules) is "6NADH""2FADH_2" , and "2ATP"

The net equation for the hydrolysis reaction is;

"Glucose+2NAD^+2p_i+2NADP\\to 2pyruvate+2H^++2NADH+ 2ATP+2H^++2H_2O+energy"

Calculating the amount of energy released per mole involves the following steps:

The first step involves the determination of moles of a solute.

"q= m*C_g*\\Delta T.q"

Whereby q= Amount of energy released /absorbed

m= mass

Cg= Specific heat capacity

"\\Delta"T= Change in temperature

To determine the moles of a solute "=n" "=" "m\\over M"

Where n=moles of absolute

m= moles of absolute

M= Molar mass of absolute

To determine the amount of energy(heat) released or absorbed per mole of solute is calculated as

"\\Delta_H" "_{soln}" "=" "q\\over n"

Where "\\Delta_H" = Molar enthalpy (heat) of solution

q= Amount of energy(heat)released /absorbed

n= moles of solute

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17.07.20, 04:29

Thanks a lot!

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