A sample of pure sodium carbonate 0.318 g is dissolved in water and titrated with HCI solution. A volume of 60 mL is required to reach the methyl orange end point. Calculate the molarity of the acid.
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a
0.1 M
b
0.2 M
c
0.4 M
d
None of these
answer is A.
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Detailed Solution
Na2CO3+2HCl⟶2NaCl+H2O+CO2At the equivalent point m.mole of HCl =2 x m.mole of Na2CO360×M=2×0.318106×1000Mw of Na2CO3=106M=0.1
A sample of pure sodium carbonate 0.318 g is dissolved in water and titrated with HCI solution. A volume of 60 mL is required to reach the methyl orange end point. Calculate the molarity of the acid.