Reference no: EM131784062
Problem I: Consider the dissociation of iodine I2(g)<=> 2 I (g). At 1473 K, kc= 0.0258, 20.0 g of an I2/I mixture exerts a pressure of 1.30 atm in a volume of 10.0L.
A) At the pressure of 1.30 atm what are the mole fractions the 2 gases in I2/I mixture?
B) After a certain period, the system reaches its equilibrium state, what is the pressure of the system at equilibrium?
(Hint: the molar mass of I2 = 253.8g/mol)
Problem II: For the following cell Al(s)|Al3+
(1.00 M || Be 2+ (1.0×10^-9) Be(s)
A) Write the overall net ionic equation
B) Calculate the cell potential Ecell at 25°C and predict the spontaneity of the overall reaction.
C) Calculate the cell potential Ecell at 300°C and predict the spontaneity of the overall reaction.
The standard reduction potentials are:
Al3 (aq) + 3e- -> Al (s) E°= -166 V
Be2+ + 2e- -> Be (s) E°=?
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