Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

chemistry > ELECTROCHEMISTRY > Flashcards

ELECTROCHEMISTRY Flashcards

(72 cards)

Start Studying
1
Q

IF THE SECIFIC CONDUCTANCE IS K , RESISTANCE IS R AND L IS DISTANCE BETWEEN ELECTRODODES AND A IS CROSS SECTIONIAL AREA OF A CONDUTOR Cm = mol L-1 AND C eq = g eq L-1 THEN SPECIFIC RESISTANCE OF ELECTROLYTE WILL BE EQUAL TO

A

RA/L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

K IS EQUAL TO

A

1/RA
K=CONDUCTIVITY
SI UNIT SIEMENS/METER

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

MOLAR CONDUCTIVITY ʎm IS =

A

1000K/Cm
&
KA/L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

CELL CONSTANT IS

A

L/A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

WHICH AMONG THE FOLLOWING IS NOT CONDUCTOR OF ELECTRICITY ??
1]NACLaq
2]NACLs
3]NACLmol
4]AG

A

2]NACL S

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

BY WHICH OF THE FOLLOWING THE RESISTANCE OF SOLU IS MULTIPLIED TO OBTAIN CELL CONSTANT

A

SPECIFIC CONDUTANE OR CONDUCTIVITY K

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

INCREASE IN EQUIVAKENT CONTANCE OF THE SOLU OF AN ELECTROYLTE BY DILLUTION IS DUE TO

A

INCREASE IN IONIZATION OF ELECTROLYTE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

IF THE SPECIFIC CONDUCTANCE AND OBVERSEED CONDUCTANCE OF AN ELECTROLYTE IS SAME THEN ITS CELL CONSTANT WILL BE

A

1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

UNIT OF CELL CONSTANT IS

A

CM-1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

UNIT OF SPECIFIC CONUCTANCE IS

A

OHM-1CM-1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

IF THE CONVERSATION OF ANY SOLUTION IS C GRAM EQUIVALENT / LITRE AND SPECIFIC RESISTANCE IS A ITS EQUIVALENT CONDUCTANCE WILL BE

A

1000A/C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

THE COATING OF LAYER OF ZINC ON IRON TO PREVENT IT FROM CORROSION IS CALLED

A

GAKVANIZATION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A SATURATED SOLTUION OF KNO3 IS USED FOR SALT BRIDGE BECAUSE

A

SPEED OF BOTH CATION ANION IS NEARLY SAME

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

ACTS AS DIPOLAR IN DRY CELLS

A

MnO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

REDUCTION IS KNOWN AS

A

ELECTRONATION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

WHAT IS PATH OF ELECTRIC CURRENT IN A DAINEL CELL WHEN ZN AND CU ELECTRODES ARE CONNECTED

A

FROM ZN TO CU OUTSIDE THE CELL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

IN A CELL CONTAINING ZN ELECTRODE AND NORMAL HYDROGEN ELECTRODE [NHE] ZN ACT AS

A

ANODE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

IF A SALT BRIDGE IS REMOVED FROM HALF CELLS THEN VOLTAGE

A

REDUCES AND BECOMES 0

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

WHEN LEAD STORAGE BATTERY IS DISCHARGED WHAT IS USED

A

H2SO4 IS USED

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

PROCESS OF RUSTING OF IRON IS

A

CORROSION

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

VALUE OF STANDARD POTENTIAL OF HYDROGEN ELECTRODE IS

A

ZERO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

ACETIC ACID IS — ELECTROLYTE

A

WEAK

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

CONDUCTANCE OF ELECTROLYTE — WITH INCREASE IN TEMP

A

INCREASE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

ON INCREASING DILUTION THE VALUE OF SPECIFIC CONDUCTANCE OF A SOLU

A

DECREASES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
---- DECREASES WITH INCRESE IN SIZE OF ION
CONDUCTANCE
26
PRIMARY CELLS CANNOT ---- AGAIN
CHARGED
27
DEVICE WHICH CONVERTS CHEMICAL ENERGY INTO ELECTRICAL ENERGY IS KNOWN AS ---
ELECTROCHEMIAL CELL
28
AMOUNT OF ELECTRIC CURRENT WHICH PRODUCES ONE GRAM EQUIVALENT OF A SUBSTANCE KNOWN AS
FARADAY
29
IN METALLIC CONDUCTION ----OROPERTY REMAINS UNCHANGED
CHEMICAL
30
RECIPROCAL OF RESISTANCE IS KNOWN AS ---
CONDUCTANCE
31
CONDUCTANCE OF 1CM CUBE OF A CONDUCTOR IS CALLED
SPECIFIC CONDUCTANCEE
32
1 FARDAY IS EQUAL TO ----COULOMB
96500
33
RUSTING OF IRON IS AN EXAMPLE OF
CORRSION
34
POTENTIAL OF STANDARD HYDROGEN ELECTRODE IS ASSUMED TO BE
0
35
IN ELECTROLYTIC CELL OF AQ SOLUTION , NA METAL IS ROD ELECTRODE
FALSE
36
IN KO2 OXIDATION STATE OF OXYGEN IS ZERO.
FALSE
37
SN+2 OXIDIES FE+3
FALSE
38
ZN/ZNSO4 IS REFERNACE ELECTRODE
FALSE
39
EFFICENCY OF HYDROGEN OXYGEN FUEL CELL IS 23%.
FALSE
40
RELATION OF ∆G=-nFE TRUE FALSE ??
TRUE
41
SALT BRIDGE MAINTAINS ELECTRICAL NETURALILTY BETWEEN TWO SOLUTIONS
TRUE
42
IN THE CELL ZN|ZN+2||CU+2|CU ZN E;ECTRODE IS
NEGATIVE
43
ELECTRICAL NETURALLITY OF BOTH THE HALF CELLS IS MAINTAINED
SALT BRIDGE
44
THE E* VALUE OF THE HALF CELL WHOSE ELECTRODE HAS LESS TENDANCY TO RELEASE ELECTRON THAN H2
POSITIVE
45
EXAMPLE OFSTRONG EECTROLYTE
HCL, NAOH, NACL
46
EXAMPLE OF WEAK ELECTROLYTE
CH3COOH , H2CO3
47
WHAT IS EFFECT OF TEMP ON ELECTROLYTIC CONDUCTIVITY
INCREASES
48
KOHLRAUSCH LAW
REFER GOOGLE 😅😅 AS FORMULA IMP BUT CANT TYPE
49
EQUIVALENT CONDUCTANCE FORMULA
ʎeq=1000*V1/Ceq
50
MOLAR CONDUCTANCE FORMULA
ʎm = 1000*v1/Cm
51
DEVICE WHICH CONVERTS ELECTRICAL ENERGY INTO CHEMIACL ENERGY
ELECTROLYTIC CELL
52
WHAT IS THE POTENTIAL PRODUCED DUE TO REDOX RXN BETWEEN A METAL ELECTRODE AND ITS ION CALLED
ELECTRODE POTENTIAL
53
WHAT IS THE POTENTIALOF BOTH THE ELECTRODES OF THE CELL DUE TO WHICH ELECTRIC CURRENT FLOWS IN THE CELL
ELECTROMOTIVE FORCE
54
WHAT IS UNIT OF POTENTIAL DIFFERENCE ?
VOLT
55
THE CELL WHICH IS RECHAREGED IS KNOWN AS
SECONDARY CELL
56
UNIT OF EQUIVALENT CONDUCTANCE
OHM CM2 GM EQ-1
57
WHAT IS CHEMICAL COMPOSTION OF RUST ?
FE2O3.xH2O
58
WHAT IS NAME OF RXN IN WHICH OXIDATION AND REDUCTION TAKE PLACE SIMILTANEOUS;Y
REDOX RXN
59
WHY DOES THE CONDUCTIVITY OF A SOLU DECREASE WITH DILTUOION
BECUZ NO OF IONS PER CM3 DREASES
60
DEFINATION OF ELECTROCHEMICAL CELL
SYSTEM IN WHICH CHEMICAL ENERGY IS CONERTED INTO ELECTRICAL ENERGY BY OXIDATION REDUCTION IS KNOWN AS ELECTROCHEMICAL CELL OR VOLTRIC CELL
61
WHAT IS ELECTRODE POTENTIAL
THE POTENTIAL DIFFERANCE DELVELOPED BETWEEN THE ELECTRODES AND ELECTROLYTE OF AN ELECTORLTIC CELL IS KNOWN AS ELECTRODE POTENTIAL .
62
STANDARD ELECTRODE POTENTIAL
STANDARD ELECTRODE POTENTIAL OF A HALF CELL OS THE POTENTIAL DIFFERANCE WHEN 1 ELECTRODE IS DIPPED IN MOLAR SOLU OF ITS ION AT298K . IF THE ELECTRODE IS GASEOUS THE PRESSURE OF GAS MUST BE ONE ATOMSPHERE IN IUPAC SYS REDUCTION POTENTIAL IS STANDARD ELECTRODE POTENTIAL
63
WHY IS IT NOT POSSIBLE TO DETERMINE THE ELECTRODE POTENTIAL OF SINGLE HALF CELL
BECAUSE ELECTROMOTIVE FORCES OF 2 ELECTRODE CONTANING A COMPLETE CIRCUIT CAN BE MEASURED
64
WHAT IS SALT BRIDGE ?? WRITE ITS TWO FUNCTIONS ??
U SHAPED TUBE FILLED WITH KCL OR KNO3 IN AGAR AGAR SOLUTION OR GELATIN IS KNOWN AS SALT BRIDGE . ITS CONNECTED TWO HALF CELL FUNCTION 1] IT ALLOWS THE FLOW OF CURRENT BY COMPLETING THE CIRCUIT 2]IT MAINTAINS THE ELECTRICAL NETURALLITY .
65
DEFINATION OF METALLIC CONDUCTION
METALLIC CONDUCTION TAKES PLACE BY MOVEMENT OF ELECTRONS THERE IS NO CHEMICAL CHANGE . THERE IS NO TRANSFER OF MATTER IN METALLIC CONDUCTION CONDUCTIVITY DECREASES WITH INCREASE IN TEMP
66
ELECTROLYTIC CONDUCTION
ELECTRLYTIC CONDUCTION TAES PLACES BY MOVEMENT OF IONS DUE TO CHEMICAL CHANGE DECOMPOSTION OF ELECTROLYTE TAKES PLACE . TRANSFER OF MATTER TAKES PLACE AS IONS IN ELECTROLYTIC CONDUCTION CONDUCTIVITY INCREASES WITH INCREASE IN TEMP
67
EMF /CELL POTENTIAL
IT IS THE POTENTIAL DIFFERANCE BETWEEN 2 TERMINALS OF CELL WHEN NO CURRENT IS FLOWING IN THE CIRCUIT IE. IN AN OPWN CIRCUIT ITS MAXIMUM VOLTAGE WHICH CAN BE OBTANIED FROM CELL IT CAN BE MEASURED BY POTENTIAMETRIC WORK DONE BY ELECTROMOTIVE FORCE IS MAXIMUM WORK DONE BY A CELL IT IS RESPONSIBLE FOR CONTIOUS FLOW OF CURRENT IN ELECTRIC CIRCUIT
68
POTENTIAL DIFFERANCE
IT IS THE DIFFERANCE OF THE ELECTRODES POTENTIAL OF 2 ELECTRODES WHEN THE CELL IS SENDING CURRENT THROUGH THE CIRCUIT IT IS LESS THA MAXIMUM VOLTAGE AS IT DIFF BETWEEN ELECTRODES IT CAN BE MEASURED BY SIMPLE VOLTMETER WORK DONE BY POTENTIAL DIFFERENCE IS LESS THAN THE MAXIMUM WORK DONE BY A CELL IT IS NOT RESPONSIBLE FOR CONTIOUS FLOW OF CURRENT IN ELECTRIC CRICUIT .
69
DEFINE RESTIVITY
WHEN CURRENT FLOW IN THE SOLU THROUGH 2ELECTRODES THE RESITANCE IS PORPOSTIALNAL TO LENGTH AND INVERSELY PROPOSTIONAL TO CROSS SECTIONAL AREA A
70
ELECTROCHEMICAL SERIES
THE SERIES IN WHICH ELEMENT ARE ARRANGED IN INCREASING ORDER OF STANDRD ELECTRODE POTENTIAL IS KNOWN AS ELECTROCHEMICAL SERIES
71
GALVONIC CELL DEFINATION
IT IS A DEVICE TO CONVERT CHEMICAL ENERGY INTO ELECTRICAL ENERGY IT CONSIST OF TWO ELECTRODES IN DIIFERENT COMPARTMENETS JOINED WITH SALT BRIGDE REDOX RXN OCCURING IN THE CELL ARE SPOENTENOUS FREE ENERGY DECREASE
72
ELECTROLYTIC CELL
IT IS A DEVICE TO CONVERT ELECTRICAL ENERGY INTO CHEMICAL ENERGY BOTH ELECTRODES ARE IN SAME SOLU REDOX RXN OCCURING IN CELLS ARE NOT SPONTEOUS FREE ENGERY INCREASES

chemistry (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions