Question

How much sodium chloride can dissolve in 40 g of water at 50°C?

Answer 1

14.98g

Explanation:

With a solubility of 37g/100mL at 50’C and a water density of 0.988 g/mL at the same temperature, 40g of water would be 40.49 mL, so it could dissolve `(40.49/100)*37 = 14.98`g of NaCl.
http://www.800mainstreet.com/9/0009-004-solub.html

Answer 2

100 mL water (at 50 degrees) can dissolve 37 grams of NaCl.

Explanation:

According to Volland (2005), 100 mL water can dissolve 37 grams of NaCl. Since you have 40 grams of water, it means at 50 degrees you have `((40 g)/(0.988 g/(cm^3)))` or `40.49 cm^3` (The Engineering Toolbox, 2017). Thererefore, you have 40.49 mL of water.

Now you can compute solved NaCl by:

`(40.49*37)/100`

The answer is `14.98 grams` of NaCl

References:

The Engineering Toolbox (2017). Water Density and Specific Weight. Retrieved on the internet: www(dot)engineeringtoolbox(dot)com(slash)water(dash)density(dash)specific(dash)weight(dash)d_595(dot)html

Volland, W. (2005). Online Introductory Chemistry. Retrieved on the Internet: www(dot)800mainstreet(dot)com(slash)9(slash)0009(dash)004(dash)solub(dot)html