Q.4. Calculate E'ell using AGf values for the following reaction? Comment whether the reaction is spontareous or not? Zn (s) + Cl2 (g) -Zır*(aq) + 2CH (ag) where AGf values are for: Zn(s)= 0, Clz (g)= 0, Zr (aq) =-147 kj & Cl (ac)= -131 kj
Q.4. Calculate E'ell using AGf values for the following reaction? Comment whether the reaction is spontareous or not? Zn (s) + Cl2 (g) -Zır*(aq) + 2CH (ag) where AGf values are for: Zn(s)= 0, Clz (g)= 0, Zr (aq) =-147 kj & Cl (ac)= -131 kj
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Electrochemistry
Roll No. 4,9, 14, 19, 24, 29, 34
Q.1. Compare between galvanic and electrolytic cells.
Q.2. Explain electrolysis of molten and aqueous NaCl.
Q.3. Detemine pH for the following cell:
ZnyZr* (1M) || H+ (test solution)/Hz (1 atm)/Pt
Given, Erell =0.50 V and E'sell =0.76 V
Q.4. Calculate E'ell using AGf values for the following reaction? Comment whether the reaction
is spontaneous or not?
Zn (s) + Clz (g) – Zı* (aq) + 2CH (aq)
where AGf values are for: Zn(s)= 0, Clz (g= 0, Z (aq) =-147 kj & Cl (aq)= -131 kj
Q.5. Draw the voltaic cell with following notation and comment whether the cell reaction is
sportaneous or not? If not, what shouldyou do?
Cu (s)/ Cư (ag) |l (test solution)/H (1 atm)/Pt
where E'Cycet = -0.34 V & E° H/ H=0.0 V
Q.6. Balance the following net reaction for oxidation of Zn by HNO: (acidic solution) using half
-reaction method:
Zn (s) + NO: (aq) Zr (aq) + NH "(aq)
Q.7. Consider the following cell reaction.
Cư (aq) + 21(aq) –
Cu(s) + 2(s)
Given, Cư (aq)/Cu(s) = 0.34 V
2(g) /I (aq) = 0.54 V
a) Write down half-cell reactions for the above reaction.
b) Determine whether the above reaction is spontaneous or not.
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