CHEM help?!!!?

Posted on 2017-11-20 18:38:00 in Chemistry by ANNY

QUESTION 1 
A voltaic cell consists of an Ni/Ni2+ half-cell and a Co/Co2+ half-cell. Calculate Ecell when conc. of Ni2+ = 0.112 M and of Co2+ = 0.482 M. 
The reduction potential for Ni2+ is -0.247 V and for Co2+ is -0.277 V. 

QUESTION 2 
A voltaic cell consists of an Mn/Mn2+ half-cell and a Cd/Cd2+ half-cell. Calculate {Mn2+} when {Cd2+} = 0.75 M and Ecell = 0.82 V. 
Use reduction potential values of Mn2+ = -1.18 V and for Cd2+ = -0.40 V. 

QUESTION 3 
How many coulombs are required to produce 70 g of aluminum metal from a sample of molten aluminum fluoride? 
Use scientific (E) notation with 2 numbers after the decimal point. 

QUESTION 4 
How many grams of copper may be formed by the passage of 5,668 C through an electrolytic cell that contains an aqueous cuprous (Cu(I)) salt. 

QUESTION 5
How many grams of cobalt may be formed by the passage of 5,019 C through an electrolytic cell that contains an aqueous cobaltic (Co(III) salt.

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