A hydrate of CuSO4 has a mass of 2.82 g before heating. After heating, the mass of the anhydrous compound is found to be 1.80 g. Determine the formula of the hydrate and then write out the name of the hydrate.

Question

jfraser · Answer

hydrates are symbolized by a formula like: CuSO4*"n"H2O, where "n" is a small whole integer, referring to the number of moles of water that each crystal of salt can "hold onto"

You need to find the mass of water lost from the hydrate.

You need to find the mass of anhydrous, or dry, salt, left over.

You need to find the moles of both the salt, and the water

Divide the moles of water by moles of salt, and you'll get something close to a whole number. That's the value that goes as "n", and the formula of the hydrate will be complete.

anonymous · Answer

I did the whole calculation and it gave me CuSO4*H2O

anonymous · Answer

just one mole of water