Problem: Here are the solubilities of some salts in water. For each salt, determine how much will remain undissolved if 500 g is mixed into a liter of pure water at 40 °C. One significant figure is sufficient in each answer. (a) Pb(NO3)2 (b) KCl(c) K2Cr2O7

FREE Expert Solution

We are asked to determine how much of the given salts will remain undissolved if 500 g is mixed into a liter of pure water at 40 °C.

We shall refer to books and on the internet regarding the solubilities of these salts.

For Pb(NO3)2. Nitrates are highly soluble in water. Based on the literature, it has a solubility of 720.1 g/L. Therefore, it would be completely dissolved and none would remain when mixed with pure water at 40°C.

For KCl. Based on the literature, it has a solubility of 401 g/L. Therefore, it would not completely dissolve in pure water. The remaining undissolved salt is:

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Problem Details

Here are the solubilities of some salts in water. For each salt, determine how much will remain undissolved if 500 g is mixed into a liter of pure water at 40 °C. One significant figure is sufficient in each answer. 

(a) Pb(NO3)2 

(b) KCl

(c) K2Cr2O7

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