how well can you apply the charles law to the sample of gas that experiences changes in pressure and volume ? assume that pressu
1 answer:
We can apply Charles' law to find the change in the volume of the gas since the pressure in this chamber is kept constant.
Explanation:
- Charles' law states that at constant pressure, the change in temperature in a chamber will lead to change in its volume, which is to say that temperature and volume changes are directly proportional.
- The volume change here says that the gas expands as the temperature rises, give that the moles of the gas are constant.
- Hence, the equation could be,
So, Charles' law can be directly applied to the situation to find or analyse the changing the variables such as volume and temperature
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Answer:
2.53 grams of hydrogen gas will be produced and 12.2 many grams of the excess reactant i.e. calcium will be left over.
Explanation:
Moles of calcium =
Moles of HCl =
According to reaction, 2 moles of HCl reacts with 1 mole of calcium :
Then 2.53 moles of HCl will recat with :
of calcium.
As we can see moles of calcium are in excessive amount. Hence calcium is an excessive reagent.
Moles of calcium left unreacted =1.57 mol - 1.265 mol =0.305 mol
Mass calcium left unreacted = 0.305 mol × 40 g/mol =12.2 g
Since, calcium is an excessive reagent HCl is limiting reagent and the amount of hydrogen gas produced will depend on HCl .
According to reaction, 2 moles of HCl gives 1 mole of hydrogen gas.
Then 2.53 moles of HCl will give:
of hydrogen gas.
Mass of 1.265 mol of hydrogen gas = 1.265 mol × 2 g/mol = 2.53 g
2.53 grams of hydrogen gas will be produced and 12.2 many grams of the excess reactant i.e. calcium will be left over.