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प्रश्न
Identify the following reactions as either oxidation or reduction : O + 2e- → O-2
उत्तर
Reduction
APPEARS IN
संबंधित प्रश्न
State the electrode reaction at the anode during electrolysis of:
very dilute sulphuric acid.
From the given list :
NaCl, NaOH, H2O (pure), NH4OH, urea, dil.H2SO4, glucose, acetic acid, H2CO3.
Select :
a) Substances which will behave as strong electrolytes.
b) Substances which will behave as weak electrolytes.
c) Substances which are non-elctrolytes.
Explain, why electrolysis is an example of redox reaction?
Fill in the blank :
The ions which discharge on the positive electrode during electrolysis ____________electrons. Thus, the ions are said to be _____________.
Name : A salt which is a weak electrolyte.
Name : A non-metallic element which is a conductor of electricity.
Write down the word or phrase from the given options that will correctly fill in the blanks in the following sentence:
We can expect that pure water _______ normally conduct electricity.
Complete the sentence by choosing correct words given in brackets.
Electrolysis is the passage of __________ (electricity/electrons) through a liquid or solution accompanied by a __________ ( physical/chemical ) change.
Identify the following reactions as either oxidation or reduction : Fe+3 + e- → Fe+2
108 g of silver (molar mass 108 g mol-1) is deposited at cathode from AgNO3 (aq) solution by a certain quantity of electricity. The volume (in L) of oxygen gas produced at 273 K and 1 bar pressure from water by the same quantity of electricity is ______.
