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Checking a Model Bicarbonate Refill 4 questions
Checking a Model Bicarbonate Refill
Base your answers on the information provided and your knowledge of chemistry. Use the 2025 Chemistry Reference Tables as needed.
A classroom simulation tests bicarbonate cartridges used to remove hydrogen ions from a model acidic solution. Every run starts with 0.030 mol H+. The model collects all the carbon dioxide produced, and the reaction stops when either reactant is used up.
H+(aq) + HCO3-(aq) → CO2(g) + H2O(l)
| Cartridge | Initial bicarbonate (mol) |
|---|---|
| P | 0.020 |
| Q | 0.030 |
| R | 0.040 |
Question 1
For cartridge P, identify the limiting reactant. Explain using the initial amounts and the coefficients.
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Question 2
Which cartridge uses up both reactants in the same run?
- P only
- Q only
- R only
- Q and R
A repeat run starts with the same 0.030 mol H+, but the cartridge label is missing. The simulation collects only 0.020 mol CO2 when the reaction stops.
Question 3
Calculate the hydrogen ion amount still present in the repeat run. Show how the gas amount enters the calculation.
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Question 4
Suppose a later check shows the gas trap missed some carbon dioxide in the repeat run. Would using only the trapped gas make the calculated leftover H⁺ amount too high or too low? Explain.
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