In the reaction, 2KClO 3 → 2KCl + 3O 2 when 36.75 g of KClO 3 is heated, the volume of oxygen evolved at N.T.P. will be:
Text Solution
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1.Write the balanced chemical equation for the reaction:
2. Determine the molar mass of 
:
Molar mass of 
3. Convert mass of 
to moles:
Moles of 
4. Determine moles of oxygen produced using stoichiometry:
From the balanced equation, 2 moles of 
produce 3 moles of 
.
Moles of 
5. Calculate the volume of oxygen at N.T.P (NTP - 
and 
):
1 mole of any gas occupies 
at N.T.P.
Volume of 
Therefore, the volume of oxygen evolved at N.T.P. when 
of 
is heated is 
.
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