Photosynthesis can be represented by the equation 6CO_2(g) + 6H_2O(l) lrarr C_6H
ID: 1009043 • Letter: P
Question
Photosynthesis can be represented by the equation 6CO_2(g) + 6H_2O(l) lrarr C_6H_12O_6(g) + 6O_2(g) Using data from the website http://bilbo.chm uri.eduCUM 112/lablcs'thcmnablcJiim, calculate delta S degree for this process. Does the sign of delta S degree make sense? Explain. Given that delta H degree for the reaction is 2802 kJ. calculate delta G degree for the reaction. Is the reaction spontaneous at 25 degree C? Explain. Would you expect the value of K_p for this reaction to be large or small? Explain, but do not do a calculation.Explanation / Answer
6CO2 + 6H2O ----> C6H12O6 + 6O2
a) Dsrxn = (205*6+209.2) - (6*213.6+6*69.9) = -261.8 j/mol.k
DHrxn = 2802.5 kj
b) DG0 = DH0 - TDS0
= (2802.5*10^3)-(298.15*-261.8)
= 2.88*10^3 kj
c) as DG0 is +ve . the reaction is nonspontaneous
d) it is very small