Show in chemistry the fermentation of carbohydrate to form alcohol
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<u>Answer:</u> The volume of permanganate ion (potassium permanganate) is 10.0 mL
<u>Explanation:</u>
To calculate the number of moles for given molarity, we use the equation:
.....(1)
Molarity of ferrous sulfate solution = 0.381 M
Volume of solution = 20.0 mL = 0.020 L (Conversion factor: 1 L = 1000 mL)
Putting values in equation 1, we get:
For the given chemical equation:
By Stoichiometry of the reaction:
5 moles of iron (II) ions (ferrous sulfate) reacts with 1 mole of permanganate ion (potassium permanganate)
So, 0.00762 moles of iron (II) ions (ferrous sulfate) will react with = of permanganate ion (potassium permanganate)
Now, calculating the volume of permanganate ion (potassium permanganate) by using equation 1, we get:
Molarity of permanganate ion (potassium permanganate) = 0.152 M
Moles of permanganate ion (potassium permanganate) = 0.00152 mol
Putting values in equation 1, we get:
Hence, the volume of permanganate ion (potassium permanganate) is 10.0 mL
Answer:
In the kinetic molecular theory, the molecules of an ideal gas are in constant random motion inside the container of the gas, and the pressure of the gas (which is the pressure exerted by the molecules in their collisions with the walls of the container) arise from this random motion of the molecules.
The main assumptions of the kinetic theory of gases are:
- The gas consists of a large number of molecules that collide between each other and the walls of the container; all these collisions are elastic
- The duration of the collisions is negligible compared to the time between the collisions
- The number of molecules is so large that statistics can be applied
- Intermolecular forces between the molecules are negligible (except during the collisions)
- The volume of the molecules is negligible compared to the volume of the container
In particular, the pressure of the gas is directly proportional to the average kinetic energy of the molecules, according to the equation:
where
p is the pressure of the gas
V is the volume of the container
K is the average kinetic energy of the molecules in the gas
We see that as the pressure is higher, the higher the kinetic energy of the particles: this means that the molecules will move faster, on average.
Therefore in this problem, the gas that exerts a pressure of 1.5 atm will have molecules moving faster than the molecules of the gas exerting a pressure of only 1.0 atm.