Calculate the molarity of a solution prepared by dissolving 5.850g of solid NaCl in enough water to make 200mL of the solution?

Question

Do not understand the setup.

61397 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-21T07:17:54

# #
Molarity of solution #= 0.5\ M#
# #

# #

#\text{Molarity} = \text{Moles of solute}/\text{Volume of solution in litres}#

Solute is #\ \ \text{NaCl}#.

Molar mass of #\ \ \text{NaCl}# #= 23 + 35.5#

#= 58.5\ g# /#mol#

# #

#\text{Number of moles} = \text{Given mass}/\text{Molar mass}#

Given mass of #\ \ \text{NaCl}# #=5.85\ g#

Moles of #\ \ \text{NaCl}# #= 5.85/58.5#

#=0.1#

Volume of solution #= 200\ mL = 0.2\ L#

# #

Molarity of solution #=0.1/0.2#

#= 0.5\ M#