At what temperature does the following reaction become
spontaneous? You may assum that the delta H0 and delta
S0 are temperature independent.
2NO(g) + 2H2(g) ---> N2(g) +
2H2O(g)
What is the condition for a reaction to be spontaneous? If a
reaction is spontaneous at one temperature is it spontaneous under
all conditions? [10 marks] ii) Given the following information
?fH°(CH3OH(g)) = -201.0 kJ mol-1 / S°(CH3OH(g)) = 239.70 J mol-1
K-1 ?fH°(CH2O(g)) = -108.6 kJ mol-1 / S°(CH2O(g)) = 218.95 J mol-1
K-1 ?fH°(H2(g)) = 0 / S°(H2(g)) = 130.70 J mol-1 K-1 determine
?rH°, ?rS° and ?rG° for the formation of formaldehyde from the
dehydrogenation of methanol...
The following reaction is spontaneous as written when the
components are in their standard states:
3 Zn(s) +2 Cr3+(aq) ?3
Zn2+(aq) +2 Cr(s)
Part A
If the [Zn2+] is 5 molL?1, determine the value of [Cr3+] below
which the reaction will be spontaneous in the opposite
direction.
Wittig Reaction:
Under what conditions does the Wittig reaction favor the cis
isomer? Under what conditions does the Wittig reaction
favor the trans isomer?
_____________________________________________________________
Calculate E∘ for each of the following reactions, and tell which
are spontaneous under standard-state conditions. Part A
2Fe2+(aq)+Pb2+(aq)→2Fe3+(aq)+Pb(s) Express your answer using two
decimal places. E∘ = V SubmitMy AnswersGive Up Part B
Mg(s)+Ni2+(aq)→Mg2+(aq)+Ni(s) Express your answer using two decimal
places. E∘ = V SubmitMy AnswersGive Up Part C Tell which are
spontaneous under standard-state conditions. Check all that apply.
Check all that apply. 2Fe2+(aq)+Pb2+(aq)→2Fe3+(aq)+Pb(s)
Mg(s)+Ni2+(aq)→Mg2+(aq)+Ni(s)
10. Determine the direction in which the spontaneous reaction
occurs from the following standard reduction potentials. Indicate
the reaction that is occurring at the anode, the cathode, the cell
potential and the net ionic reaction.
Sn^4+ (ac) + 2e ----> Sn^2+ (ac) E = 0.15V
Fe^3+ (ac) + 1e ----> Fe^2+ (ac) E = 0.77V
Calculate the membrane potential of a neuron at standard
temperature under each of the following conditions: a. The
concentration of sodium, potassium and chloride is the same on both
the inside and the outside of the membrane. b. The concentration of
ions inside and outside the cell are as given below, but the
relative permeability is the same for the three ions. c. The
concentration of ions inside and outside the cell are as given
below, but the relative permeability...