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Na2CO3 + CO2 + H2O → 2 NaHCO3 How many grams of soda ash would be needed to produce 1.00 kg of sodium hydrogen carbonate?

User SANAT
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1 Answer

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The first step we have to follow is to convert the given mass of sodium hydrogen carbonate to moles using its molecular mass (MM=84kg/kmol):


1.00kgNaHCO_3\cdot(1kmolNaHCO_3)/(84kgNaHCO_3)=0.012kmolNaHCO_3

Now, use the stoichiometric ratio given by the equation to find how many moles are needed to produce 0.012kmoles of NaHCO₃:


0.012kgNaHCO_3\cdot(1kmolNa_2CO_3)/(2kmolNaHCO_3)=0.006kmolNa_2CO_3

Now, convert the estimated amount of Na2CO3 to mass using its molecular mass (MM=106kg/kmol):


0.006kmolNa_2CO_3\cdot(106gNa_2CO_3)/(kmolNa_2CO_3)=0.636kgNa_2CO_3

Convert the mass in kg to g:


0.636kgNa_2CO_3\cdot(1000gNa_2CO_3)/(1kgNa_2CO_3)=636gNa_2CO_3

It means that the answer is 636g of soda ash are needed to produce 1.00 kg of sodium hydrogen carbonate.

User Vannen
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