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A 10.00 g mixture of NaHCO3 and Na2CO3 was heated and yielded 0.0274 moles H2O and...

A 10.00 g mixture of NaHCO₃ and Na₂CO₃ was heated and yielded 0.0274 moles H₂O and 0.106 moles CO₂. Calculate the percent composition of the mixture.

2NaHCO₃ → Na₂O + 2CO₂ + H₂O

Na₂CO₃ → Na₂O + CO₂

What is the percent NaHCO₃ of the mixture?

What is the percent Na₂CO₃ of the mixture?

Expert Solution

Following is the Solution to the given question, in.... image format.........................

Since, we have Molar Mass of NaHCO₃ = 84 g/mol ...and we know Moles of NaHCO₃ (i.e. 'X' ) = 0.0548 moles

and Molar Mass of Na₂CO₃ = 106 g/mol ...and we know Moles of Na₂CO₃ (i.e. 'Y' ) = 0.0512 moles

Therefore.... we have:

Mass of NaHCO₃ = (84 g/mol) x (0.0548 mole) = 4.6 g (i.e. grams in 10 g Mixture ).... and...

..... Mass of Na₂CO₃ = (106 g/mol) x (0.0512 mole) = 5.427 g (i.e. grams in 10 g Mixture)

Therefore:

% NaHCO₃ = (4.6 g / 10.0 g ) x 100 = 46 % .....in Mixture

... % Na₂CO₃ = (5.4 g / 10.0 g ) x 100 = 54 % .....in Mixture

The above are the correct Answers to the given problem......

queen_honey_blossom answered 2 years ago

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