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

Apr 19, 2017

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 $\left(\frac{40.49}{100}\right) \cdot 37 = 14.98$g of NaCl.
http://www.800mainstreet.com/9/0009-004-solub.html

Apr 19, 2017

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 $\left(\frac{40 g}{0.988 \frac{g}{c {m}^{3}}}\right)$ or $40.49 c {m}^{3}$ (The Engineering Toolbox, 2017). Thererefore, you have 40.49 mL of water.

Now you can compute solved NaCl by:

$\frac{40.49 \cdot 37}{100}$

The answer is $14.98 g r a m s$ 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