Lovely Professional University 2010 B.Tech Electronics and Communications Engineering Mid term - Question Paper

LOVELY PROFESSIONAL UNIVERSITY


Mid Term examination

School:LSE Department: Chemistry

Course No: CHE101

Course Title: Chemistry
Marks; 50

PART A
Q.1 For the reaction A + B + C ? Products, the subsequent initial rate data were obtained: 

[A]

[B]

[C]
Initial Rate 
(M.s-1)
0.050
0.050
0.10
1.1 x 10-3
0.050
0.10
0.10
4.4 x 10-3
0.10
0.050
0.10
1.1 x 10-3
0.10
0.050
0.30
3.3 x 10-3
obtain the rate legal regulations for this reaction.
Q2. For a 1st order reaction the subsequent data are found from an experiment by measuring the concentration as a function of time.  The reaction is of the type: A ? products.
time (secs.)
[A]
0
1.00
50
0.500
100
?
Determine the molar concentration of A after 100 seconds have elapsed and also determine the value of rate constant k in sec-1.
Q.3 In the reaction of potassium (K) with methyl iodide (CH3I) to for the product KI, how orientation of these reactant molecules play important role in product formation. other than from this what will be the other requirements for reactant molecules to form product according to collision theory.
PART B
Q.4 Balance the subsequent redox equations:
a)CN- + MnO4- ? CNO- + MnO2 (in basic solution)
b)Cr2O72- + C2O42- ? Cr3+ + CO2 (in acidic solution)


Q.5 Ca (s) + Cd2+ (aq) ? Ca2+ (aq) + Cd (s)
In the above reaction presume that initial concentration of dissolved species are 1.0 M. Predict whether this reaction will be feasible or not in aqueous solution at 250C.
Q.6 explain the advantages and disadvantages of fuel cells over conventional power plants in producing electricity.


if u cant understand then i m attaching it

with regards

Rohitash

Attachment: lovely-professional-university-2010-b-tech-electronics-and-communications-engineering-3081-1.odt

Earning:   Approval pending.