Electrochemistry With Answers

Electrochemistry

Sr. # Questions Answers Choice
1 The process of coating a metal with zinc is called. Alloying Galvanization  Electroefining Electrplating
2 The numebr of coulombs required to deposit 1 mole of Ag 96500 C 193000 C241250 C 1 C 241250 C
3 Electroyte in electroplating of silver AgNo3 NaCl CuSO4 HNO3
4 Electrolysis of CuSO4  using copper eletrodes results in Increase in eletolyte concentration  Decrease in Cu2+ concentration  No change in electrolyte composition Formation of new compound
5 Electroplating involves. Electrolysis for coating Spontaneous oxidation  Redox without electordes Thermolysis
6 If 1 Faraday of elecricity is passed the mass deposited equals. 1 gram equivalent 1 gram 1 mole 1 atm
7 Electrochemical equivalent is. Mass per mole Mass per coulomb Charge per second Current per mass
8 One Faraday is equl to  1 C 96500 C 1 J 96500 J
9 Faradya's First Law states tass deposited is diretly proportional tohat m Time Voltage Resistance Quantity of electricity passed
10 Electroysis requires. Redox reaction Spontaneous cell Non spontaneous reaction Combustion 
11 Electrolysis is the process of  Chemical energy into electrical Electrical energy into chemical Heat energy into mechanical Mechanical energy into chemical
12 The more positive the standard reduction potential The stronger the reducing agent The weaker the oxidizing agent The stronger the oxidizing agent No effect
13 Which of the followig will react with HCl to librerate H2 gas Ag  Mg Au Cu
14 Which of the followng elements cannot displace hydrogen from acid. Zn Cu AI Fe
15 Which element has Eo = 0.00 V? H+ H2 SHE All of the above
16 Which metal is the best reducing agent. Cu K Zn Fe
17 A more genative Eo value means the electrode Is a stong oxidizing agent Is a strong reducing agent Is neurtal Has high electronegagtivity 
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