Q expression, concentrations, redox reaction, and galvanic cells?

Posted on 2017-05-01 18:43:00 in Chemistry by BOLT

1. use the two half cells for the following questions 
Ag, AgCl | CaCl2 (0.100 M) and 
Cr | CrCl3 (0.230 M) 
the given net redox reaction: 
3AgCl + Cr --> 3Ag+3Cl{^-} +Cr{^3+) 
a. write the Q expression in terms of product & reactant concentrations for the above redox reaction 
b. how many moles of electrons are transferred by this redox reaction? 
c.calculate deltaE for this cell based on the overall redox reaction and the moles of electrons transferred. 
d. is this a galvanic cell? 

2. the given cell: 
Zn | ZnCl2 (0.370 M) || Na2SO4 (0.480 M) | Ag2SO4, Ag 
deltaE is 0.988V 
half reaction fro silver cell is: 
Ag2SO4 +2 electrons--> 2Ag+SO4{^2-} 
a. find the net reaction for the cell 
b. calculate deltaE{^o} using the given deltaE and the nernst equation 
c. calculate E{^o} for the half silver reaction 
d. Zn | ZnCl2 ( x M) || Na2SO4 (0.500 M) | Ag2SO4, Ag 
if deltaE is 0.975V, find x which is this the concentration for ZnCl2

---

Answer Comment

No Answers Posted Yet.