taylorkrazy9051 taylorkrazy9051
  • 13-07-2020
  • Chemistry
contestada

A 1.555 g sample of baking soda decomposes with heat to produce 0.991 g Na2CO3. What is the percent yield of sodium carbonate, Na2CO3?

Respuesta :

Xema8 Xema8
  • 18-07-2020

Answer:

Explanation:

Baking soda decomposes to produce sodium carbonate .

2NaHCO₃  = Na₂CO₃ + CO₂ + H₂O.

2 x 84 g          106 + 10 x 18  g

Molecular mass of Na₂CO₃ .10H₂O = 286

168 g baking soda  produces 286  g sodium carbonate

1.555g baking soda will produce 286 x 1.555 / 168

= 2.647 g

Percentage yield = actual yield / theoretical yield x 100

= ( .991 /2.647 ) x 100

= 37.43 %.

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