What is the concentration of a Kl solution of 20.68 g of solute was dissolved in enough water to form 100. ml of solution?
1 answer:
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Answer:
99.3%
Explanation:
The percent by mass of the solute can be expressed as:
- % mass =
* 100%
And for this problem:
- Mass of Solute = Mass of sodium lithium chloride = 29 g
- Mass of Solvent = Mass of Water
So to calculate the percent by mass first we need to <u>calculate the mass of water</u>, to do so we use its<em> density</em> (1 g/L):
- 202 mL is equal to (202/1000) 0.202 L.
Density water = mass water / volume
- 1 g/L = mass water / 0.202 L
- Mass water = 0.202 g
Now we have all the data required to <u>calculate the % mass:</u>
- % mass =
* 100 % = 99.3%