Q7)If the reaction is spontaneous DS total > 0 , that is positive value.
Given fora spontaneous reaction, DS system is negative , DS = -100J/K
then DS surroundings must be greater than +100 J/K so that DS total = DS system + DS surr >0
Thus option A is correct.
Q8)
DS rxn = S of products - S of reactants
A) The reaction is
2NO + H2 --------> N2O + H2O
DSrxn = (219.7+69.61) -(2x210.7+130.6)
= -262.39J
B) 2N2O5 ----------> 4NO2 + O2
Ds rxn = (4x240 +205) -2x11
=+1143 J
C) H2 + I2 -----> 2HI
DS rxn = 2x206.3 -(130.6+260.58)
= +21.42 J
Please answer 7-10 if possible, thank you! 13 7. If a reaction has AS-100 J/K and...