14.1g of hydrated zinc sulphate was heated. 0.52moles of water was driven off. What is the hydrate formula?
What is the mass of .52 moles of water. Subtract that from 14.1g . How many moles of zinc sulphate is that.
Now you know how many moles of water you have to xxxx moles of zinc sulfate, what is the ratio? That is the coefficent of the water.
the mass of 0.52 moles of water is 9.3g...so that would be..9.3-0.52=8.78.I don't get it after that
4.8 sorry ...
ok, how many moles of zinc sulfate is 4.8 grams.
Then divide that number of moles of zinc sulfate INTO the moles of water, that give you the coefficent of the water in the hydrated molecule.
14.1g ZnSO4.xH2O
after heating mass formed is 4.4g or 0.03mole
after heating mass driven off is 9.3g or 0.52 mole
you said take the mass of 0.52 mole of water(9.3g) and subtract it from 14.1g that will give 4.8g....
after that im lost
is the answer 17..
yes, according to your data. I suspect something was not right with it.
thank u..i will definitely come back on this site!!!
To determine the hydrate formula, we need to analyze the amount of water that was driven off and the mass of the hydrated zinc sulfate.
1. Calculate the molar mass of water:
The molar mass of water (H₂O) is approximately 18 g/mol (2 g/mol for hydrogen and 16 g/mol for oxygen).
2. Calculate the mass of water driven off:
The number of moles of water driven off is given as 0.52 moles. Multiplying this by the molar mass of water (18 g/mol) gives us:
Mass of water driven off = 0.52 moles × 18 g/mol = 9.36 g
3. Subtract the mass of water driven off from the mass of the hydrated zinc sulfate:
The mass of the hydrated zinc sulfate is given as 14.1 g. Subtracting the mass of water driven off (9.36 g) gives us:
Mass of hydrated zinc sulfate = 14.1 g - 9.36 g = 4.74 g
4. Calculate the number of moles of hydrated zinc sulfate:
To find the number of moles of hydrated zinc sulfate, we divide the mass by the molar mass of hydrated zinc sulfate. The molar mass can be calculated by adding up the atomic masses of the constituent elements (Zinc, Sulfur, and Oxygen).
Let's assume the molar mass of hydrated zinc sulfate is M g/mol.
Therefore, 4.74 g ÷ M g/mol = N, where N is the number of moles of hydrated zinc sulfate.
5. Determine the ratio of water to zinc sulfate molecules:
Since the number of moles of water and hydrated zinc sulfate should have a whole-number ratio, we can divide the number of moles of water by N:
Ratio = 0.52 moles ÷ N
Simplify the ratio, if possible.
The resulting ratio will give us the hydrate formula. It indicates the number of water molecules bound to each molecule of zinc sulfate.