Calculations -Reaction B (4 points) Balance the equation for Reaction B, and cal

Question

Calculations -Reaction B (4 points) Balance the equation for Reaction B, and calculate the molecular mass for the product. For each mole of NaHCOs, how many moles of Na2O would be formed? Calculate the expected weight of Na,O, based on the number of moles of NaHCO, that you started with Na2O+ Sodium Oxide NaHCO3 CO2 +H2O Other Products Sodium Bicarbonate Result Units -10 Description Moles of starting NaHCO, (line 5 of the data table) Expected moles of Na O according to Rxn B Molecular Mass of Na2O Expected weight of product according to Rxn B Product yield according to Rxn B Is this weight close to the actual weight of your product?

Explanation / Answer

You need to write the balanced chemical equation first:

2NaHCO3 ------------>Na2O + 2CO2 + H2O

2 mol NaHCO3 is giving 1 mol Na2O or in terms of mass 61.98g/mol x 1mol = 61.98g

0.106 mol will give = 61.98g/2mol x 0.106 mol = 3.285 g expected product

actual product yield you must be knowing from your experiment

check yourself

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