Answer:
66.0 atm
Explanation:
We can calculate the osmotic pressure (π) using the following expression.
![\pi = i \times M \times R \times T](https://tex.z-dn.net/?f=%5Cpi%20%3D%20i%20%5Ctimes%20M%20%5Ctimes%20R%20%5Ctimes%20T)
where,
Step 1: Calculate i
Sodium sulfate completely dissociates according to the following equation.
Na₂SO₄ ⇒ 2 Na⁺ + SO₄²⁻
Since it produces 3 ions, i = 3.
Step 2: Calculate M
We can calculate the molarity of Na₂SO₄ using the following expression.
![M = \frac{mass\ of\ solute }{molar\ mass\ of\ solute\ \times liters\ of\ solution} = \frac{65.0g}{142.04g/mol \times 0.500L} =0.915M](https://tex.z-dn.net/?f=M%20%3D%20%5Cfrac%7Bmass%5C%20of%5C%20solute%20%7D%7Bmolar%5C%20mass%5C%20of%5C%20solute%5C%20%5Ctimes%20liters%5C%20of%5C%20solution%7D%20%20%3D%20%5Cfrac%7B65.0g%7D%7B142.04g%2Fmol%20%5Ctimes%200.500L%7D%20%3D0.915M)
Step 3: Calculate T
We will use the following expression.
K = °C + 273.15
K = 20°C + 273.15 = 293 K
Step 4: Calculate π
![\pi = 3 \times 0.915M \times \frac{0.08206atm.L}{mol.K} \times 293K =66.0 atm](https://tex.z-dn.net/?f=%5Cpi%20%3D%203%20%5Ctimes%200.915M%20%5Ctimes%20%5Cfrac%7B0.08206atm.L%7D%7Bmol.K%7D%20%20%5Ctimes%20293K%20%3D66.0%20atm)
2mol of Hydrogen peroxide releases 196.6KJ heat
1mol releases
5mol releases
Answer: There are
molecules in 6.73 moles of phosphorus trichloride
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number
of particles.
1 mole of
contains =
molecules
Thus 6.73 moles of
contains =
molecules
Thus there are
molecules in 6.73 moles of phosphorus trichloride