Table sugar consists primarily of a molecule called sucrose - a disaccharide (two-sugar molecule) formed from the

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Question:

Table sugar consists primarily of a molecule called sucrose - a disaccharide (two-sugar molecule) formed from the monosaccharides glucose and fructose. In order to digest sucrose, animals must first break this molecule into glucose and fructose through a hydrolysis reaction.

Consider a hydrolysis reaction that breaks down the hypothetical compound QR:

The free energy under laboratory conditions of HQ is 50 kJ/mol and the free energy of ROH is 70 kJ/mol. If the hydrolysis of QR has a ?G = -20, what is the free energy of the reactants (QR + H20)? Enter your answer below in units of kJ/mol. Do not include units in your response.