WorksheetsMolarity and dilution lab Quiz
Total questions: 20
Worksheet time: 16mins
Mass of NaCl used (stock solution) =
(remember to add units)
(a)
Moles of NaCl (stock solution) =
(remember to add units)
(a)
Show work to calculate # of moles
(a)
Volume of Water used (stock solution) in mL =
(remember to add units)
(a)
Volume of Water used (stock solution) in L =
(remember to add units)
(a)
Show work to convert from ml to L
(a)
Molarity of NaCl stock solution =
(remember to add units)
(a)
Show work to calculate molarity
(a)
Volume of NaCl (stock solution) needed to make diluted solution =
(Remember to add units)
(a)
Show work:
To calculate the volume of NaCl (stock solution) needed to make the diluted solution (in ml)
Volume of Water (extra added) needed to make diluted solution =
(remember to add units)
(a)
Show work to calculate the amount of added water
What is the boiling point of pure water?
100° F
100 K
it is variable
Why the NaCl dissolved in the H2O?
NaCl is polar and water is nonpolar
NaCl is nonpolar and water is nonpolar
NaCl is nonpolar and water is polar
NaCl is polar and water is polar
Which substance was the solute?
(a)
Which substance was the solvent?
(a)
What is the difference (in terms of molarity) between the stock solution and diluted solution?
Stock solution
Higher molarity
Diluted solution
lower molarity
5 M
high concentration (concentrated)
0.5
low concentration (diluted)
How would you write/express that NaCl is dissolved in water as a solution?
NaCl.H2O
NaCl/H2O
NaCl+H2O
Molarity is ...
grams of solute/deciliters of solvent.
grams of solute/liters of solution.
moles of solute/liters of solution.
moles of solute/milliliters of solvent.
In order to dilute a solution, you need to
add more of the solute
add more solvent
find the mass
find the volume
