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15
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Which of the following is not the disadvantage of standard hydrogen electrode primary reference electrode?
H2 gas at 1 atmospheric pressure is difficult to set up and
Platinum can be easily poisoned
Presence of oxidising agents alters the potential
It gives salt error
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15
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Hydrogen electrode which is the reference electrode can be used as which of the following?
Cathode
Anode
Anode of Cathode
Salt Bridge
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T/F A silver electrode cannot be used as an indicator electrode for Ag+ and Clâ
False
True
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Why is Standard hydrogen electrode called as the primary reference electrode?
Its output potential is independent of sol'n composition
Its output potential is zero volts
It has a constant output potential
it has a known output potential
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T/F While using reference electrodes, the internal liquid level should always be kept above that of the sample solution.
False
True
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Why is Standard hydrogen electrode called as the primary reference electrode?
It must have a constant output potential
ts output potential is dependent on the composition of the s
It must have a known output potential
It is employed in conjunction with the indicator or working
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15
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In Hydrogen electrode, the electrode is placed in a solution of ____ M HCl.
0.5
Saturated
2
1
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Which of the following is known as calomel?
Mercury chloride
potassium chloride
mercury sulfate
Silver chloride
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Calomel electrode can behave as which of the following components?
anode only
cathode only
Anode or cathode
salt bridge
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Proper care of pH electrodes includes
Store the electrode in a solution of 4 M KCl
Don't store in distilled or DI water - ions leach out
All of the above
Keep the electrodes moist at all times
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T/F If hydrogen electrode acts as cathode, hydrogen is reduced.
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False
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