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Some Basic Concepts of Chemistry
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12/08/2021 9:46 am
Topic starter
How many of 0.1N HCl are required to react completely with 1 g mixture of Na2CO3 and NaHCO3 containing equimolar amounts of two?
(a) 157.7 mL
(b) 15.77 mL
(c) 147.7 mL
(d) 14.77 mL
1 Answer
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12/08/2021 9:49 am
Correct answer: (a) 157.7 mL
Explanation:
Na2CO3 NaHCO3
x (1 - x)
\(\frac{x}{106}\) = \(\frac{1-x}{84}\) given (moles are equal )
x = 0.557
\(\frac{0.557}{53}\) + \(\frac{0.443}{84}\) = \(\frac{V \times 0.1}{1000}\)
V = 157.7 mL