Asked by natash
Find the percent by mass of sodium chloride in a 1.15M NaCl solution. The density of the solution is 1.07g/mL.
Answers
Answered by
DrBob222
1.15 M NaCl = 1.15 mols/L of solution.
How many grams is 1.15 mols? That will be 1.15 mols x molar mass NaCl = approximately 67.3 g/L.
How much does the L of solution weigh? It will weigh (has a mass of) 1.07 g/mL x 1000 mL = 1070 g.
So our solution is 67.3 g NaCl/1070 g soln = approximately 0.063 g NaCl/g soln. Multiply that by 100 to obtain the g/100 which is the percent or approximately 6.3%. You need to check my work carefully and do the math better. I just estimated. Also watch the number of significant figures if your prof is picky about that.
How many grams is 1.15 mols? That will be 1.15 mols x molar mass NaCl = approximately 67.3 g/L.
How much does the L of solution weigh? It will weigh (has a mass of) 1.07 g/mL x 1000 mL = 1070 g.
So our solution is 67.3 g NaCl/1070 g soln = approximately 0.063 g NaCl/g soln. Multiply that by 100 to obtain the g/100 which is the percent or approximately 6.3%. You need to check my work carefully and do the math better. I just estimated. Also watch the number of significant figures if your prof is picky about that.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.