2) sodium bicarbonate (s) → sodium oxide (s) + carbon dioxide (g) +

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Chapter1: Chemical Foundations
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4) During Run 1 (heated to 200°C), do you think that the sodium bicarbonate turned into NaOH, Na20, or Na2CO3?
What about during Run 2 (heated to 400°C)? Did they form the same product, or different products? Was this
expected or unexpected? Explain briefly.
Transcribed Image Text:4) During Run 1 (heated to 200°C), do you think that the sodium bicarbonate turned into NaOH, Na20, or Na2CO3? What about during Run 2 (heated to 400°C)? Did they form the same product, or different products? Was this expected or unexpected? Explain briefly.
DATA
Record all masses to the maximum number of
Run 1
Run 2
sig figs
200°C
400°C
1.
Mass of beaker
81.061
27.986
2.
Mass of beaker + NaHCO3
85.457
32.267
3.
Initial mass of NaHCO3
4.476
4.292
Mass of beaker plus products after
heating.
4.
84.3 80
30.742
5.
Mass of product (actual yield)
There are three theoretically possible chemical reactions that could occur during the thermal decomposition of baking
soda.
1)
sodium bicarbonate (s) → sodium hydroxide (s) + carbon dioxide (g)
2)
sodium bicarbonate (s) → sodium oxide (s) + carbon dioxide (g) + water (g)
3)
sodium bicarbonate (s)→ sodium carbonate (s) + carbon dioxide (g) + water (g)
Transcribed Image Text:DATA Record all masses to the maximum number of Run 1 Run 2 sig figs 200°C 400°C 1. Mass of beaker 81.061 27.986 2. Mass of beaker + NaHCO3 85.457 32.267 3. Initial mass of NaHCO3 4.476 4.292 Mass of beaker plus products after heating. 4. 84.3 80 30.742 5. Mass of product (actual yield) There are three theoretically possible chemical reactions that could occur during the thermal decomposition of baking soda. 1) sodium bicarbonate (s) → sodium hydroxide (s) + carbon dioxide (g) 2) sodium bicarbonate (s) → sodium oxide (s) + carbon dioxide (g) + water (g) 3) sodium bicarbonate (s)→ sodium carbonate (s) + carbon dioxide (g) + water (g)
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