The Na and CO3^2- ions. They are the same on both sides of the equation, so you ignore them and cancel them out.
Answer:
Option A
Explanation:
Addition of too much of solvent will make the solution dilute due to which the crystals will not form. Hence option D is incorrect
On the other hand adding a minimum amount of boiling solvent will give a saturated solution for recrystallization. Hence, option A is incorrect
Addition of cold solvent will lower the rate of formation of crystals. Hence, both option B and C are incorrect
Molarity= moles/litres
.42M=x moles/.275litres
xmoles=.42M*.275litres= .1155 moles
molar mass of KClO3 = 122.548 grams/moles
mass= 122.548grams/moles* .1155moles= 14.15 grams of PotassiumClorate.\Hopes this loves or thanks.
Answer:
Vapor pressure of the solution is 22.9 torr at 25°C
Explanation:
When a non volatile solute is added to a pure solvent, the vapour pressure of the mixture decrease regard to the pure solvent following the equation (Raoult's law):
Where vapour pressure of the pure solvent (Water) is 23.8torr at 25°C.
Mole fraction of water is the ratio between moles of water and total moles in solution. The solution has a mole fraction of water of:
Replacing in Raoult's law:
<h3>Vapor pressure of the solution is 22.9 torr at 25°C</h3>
<span> The </span>analytical chemistry<span> of natural and waste waters requires subtle correlation</span>