Answer to Question #306767 in General Chemistry for kelly

Question

What mass of solute will dissolve in 100 g water at the following temperatures?

   a. NaNO₃ at 10°C

   b. K₂Cr₂O₇ at 30°C

   c. NaCl at 50°C

Answer 1

Solubility curves for salts are shown below:

Therefore, about 80 g of NaNO₃ will dissolve in 100 g water at 10°C; about 15 g of K₂Cr₂O₇ will dissolve in 100 g water at 30°C; about 37 g of NaCl will dissolve in 100 g water at 50°C.

Answer:

 a. NaNO₃ at 10°C - about 80 g;

 b. K₂Cr₂O₇ at 30°C - about 15 g;

 c. NaCl at 50°C - about 37 g.