Question

How much energy is utilised in the synthesis of one gram mole of glucose?

• A. $673$ kcal
• B. $686$ kcal
• C. $666$ kcal
• D. $696$ kcal.

Answer 1

The correct option is B $686$ kcal

$686$ kcal energy is utilised in the synthesis of one gram mole of glucose.

When $1$ mol of glucose means $180$ g of glucose reacts with oxygen under standard conditions, so $686$ kcal is released in the reaction.

Hence, the correct option is B.