3. When collecting the hydrogen and oxygen gases, the collection bulb is initial

Question

3. When collecting the hydrogen and oxygen gases, the collection bulb is initially filled with water. What happens to the water as the gas is collected? (Review the procedure.) 4. Challenge question: If one mole of hydrogen gas is reacted with one mole of oxygen gas, which one will run out first (called the limiting reactant)? Explain HINT: It might help to think of this at the molecular level. Draw molecular level diagrams and think of in terms of molecules instead of in moles (If one molecule of hydrogen gas is reacted with one molecule of oxygen gas...)

Explanation / Answer

Answer 3) when we collect oxygen and hydrogen gas in collecting bulb, initially collecting bulb is filled with water. The temprature of water in collecting bulb is incresses beacuse

Hydrogen (H2) and oxygen (O2) are two gases that react with each other in a very quick, exothermic (heat producing) manner. The explosiveness of this reaction is greatest when the hydrogen and oxygen are mixed in just the proper proportion.

Answer 4 )

if one mole of hydrogen is react with one mole of oxygen gas what happen ?? (limiting reagent )

hydrogen and oxygen gas commbine with each other and produced water (H2O). for water formation 2 mole of hydrogen combine with 1 mole of oxygen to produce 2 mole of water thats means 1 mole of hydrogen requires only 1/2 mole of oxygen to produce 1 mole of water. So hydrogen gas runs outs first in gas chamber means hydrogen gas is limiting reagent in this procedure.

2H2 + O2 ---> 2H2O

or

H2 + 1/2 O2 ---> H2O

hydrogen gas is limiting reagent

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