Question

When 250cm² of a saturated solution of CuSO4 at 30° was evaporated to dryness, 5.0 g of the salt was obtained. Find the solubility of the salt at 30° (CuSO4=160°)​

Answer 1

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ᴡᴇɪɢʜᴛ ᴏғ sᴀʟᴛ = ➒⓿ ɢʀᴀᴍ,

sᴏʟᴜʙɪʟɪᴛʏ = ➎⓿

sɪɴɢ ғᴏʀᴍᴜʟᴀ

sᴏʟᴜʙɪʟɪᴛʏ ᴏғ sᴏʟᴜᴛᴇ =

$\frac{ weightofsolventinsaturatedsolution}{weightofsolventinsaturatedsolution}$x ➊⓿⓿

ᴏʀ ➎⓿

.

$\frac{90gm}{weightofsolventinsaturatedsolutionweightofsolute}$ x ➊⓿⓿

sᴏ ᴡᴇɪɢʜᴛ ᴏғ sᴏʟᴠᴇɴᴛ ɪɴ sᴀᴛᴜʀᴀᴛᴇᴅ sᴏʟᴜᴛɪᴏɴ =

$\frac{90gm}{50}$ x ➊⓿⓿ = ➊➑⓿ɢᴍ

Hᴇɴᴄᴇ ➊➑⓿ ɢᴍ ᴏғ ᴡᴀᴛᴇʀ ɪs ʀᴇϙᴜɪʀᴇᴅ ᴛᴏ ᴘʀᴇᴘᴀʀᴇ ᴀ sᴀᴛᴜʀᴀᴛᴇᴅ sᴏʟᴜᴛɪᴏɴ.

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