What quantity of electricity will liberate 0.125 mole of ...
What quantity of electricity will liberate 0.125 mole of oxygen molecules during the electrolysis of dilute sodium chloride solution?
24,125 C
48,250 C
72,375 C
96,500 C
Correct answer is B
4OH ⇒ 2H2O + O2 + 4e-
From the equation:
1 mole of Oxygen requires 4e
i.e 1 mole of Oxygen requires 4F,
where 1F = 96,500 C
[ 4 X 96,500 X 0.125 ] ÷ 1
= 48,250 C
Which of the following salts in aqueous solution will have a pH greater than 7? ...
What reaction takes place when palm-oil is added to potash and foam are observed? ...
Which of the following metals is the least reactive? ...
Chlorine displaces bromine from aqueous potassium bromide because ...
Hydrogen is readily released when dilute hydrochloric acid reacts with ...
When a piece of charcoal enclosed in a cylinder containing air is ignited ...
In a saturated solution at a given temperature, the undissolved solutes are in equilibrium with ...