Chemistry Test Review - Water And Solubility Page 3
ADVERTISEMENT
1
2
3Concentration
Show your work and circle your answer.
4. What is the molarity of a solution that contains 5.8 Liters of water and 9.4 grams of NaNO
?
3
9.4 g NaNO
x 1 mole = 0.111 moles
3
84.994 g
M = moles
M = 0.111 moles
M = 0.0191 M
L
5.8 L
5. How many moles of solute are needed to make a 3.0M solution with 5Liters of water?
moles = Molarity x Liters
moles = 3.0 M x 5 L
moles = 15.0 moles
6. If I have 125 mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be if I
diluted to 250 mL ?
M
= M
V
M
= 0.15 x 125
M
= 0.075 M
2
1
1
2
2
V
250
2
7. What volume is needed to make a 4.5 M solution if it was diluted from 8.0 M of 2.0 L?
V
= M
V
V
= 8.0 x 2.0
V
= 3.56 L
2
1
1
2
2
M
4.5
2
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education