QQuestionChemistry
QuestionChemistry
Complete the following chart of gas properties. For each positive observation, write a balanced chemical equation to describe the process.
| Gas | Appearance | Reaction with flame | Limewater | Behavior with water |
| --- | --- | --- | --- | --- |
| CO^2 | Clear | Extinguishes the flames | Nothing | N/A |
| H^2 | Clear | Extinguishes spills, Holes or vapor gases | N/A | N/A |
| O^2 | Clear | Reignites the flame | N/A | N/A |
| HCl | Bubbly white | N/A | N/A | Blue Litmus turned red |
| NH^3 | Sodids | N/A | N/A | Water Bubbles |
H_2 \quad 2H_2 + O_2 \rightarrow 2H_2 O
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Answer
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Step 1:: Write the balanced chemical equation for the reaction of hydrogen gas (H2) with oxygen gas (O2) to produce water (H^2O).
2H_2 + O_2 \rightarrow 2H_2O
Step 2:: Explain the reaction.
Hydrogen gas (H2) reacts with oxygen gas (O2) in a combustion reaction to produce water (H^2O). This reaction is highly exothermic, releasing a large amount of energy in the form of heat and light.
Step 3:: Relate the reaction to the given information.
The table states that hydrogen gas (H2) extinguishes spills, holes, or vapor gases. This is likely due to the fact that the reaction of hydrogen gas with oxygen gas is so rapid and exothermic that it can cause the flammable substances to ignite, effectively extinguishing them.
Step 4:: Conclusion.
The reaction of hydrogen gas (H2) with oxygen gas (O2) is a highly exothermic combustion reaction that produces water (H^2O). This reaction can cause flammable substances to ignite, which may explain why hydrogen gas extinguishes spills, holes, or vapor gases.
Final Answer
The balanced chemical equation for the reaction of hydrogen gas (H2) with oxygen gas (O2) to produce water (H^2O) is: 2H_2 + O_2 \rightarrow 2H_2 O
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