What mass of #C_12H_22O_11# is needed to make 500mL of 0.200M solution?

1 Answer
Mar 5, 2017

Answer:

#"Concentration"# #=# #"Moles of solute"/"Volume of solution"#

Explanation:

And thus #"moles of solute"# #=# #"concentration "xx" volume"#:

#=500*cancel(mL)xx10^-3cancelL*cancel(mL^-1)xx0.200*mol*cancel(L^-1)#

#=0.100*mol#.

And since #"number of moles"# #=# #"mass"/"molar mass"#

#"Mass"="moles"xx"molar mass"=0.100*cancel(mol)xx342.29*g*cancel(mol^-1)=??g#

So we need approx. #35*g# sucrose.