Question

Which solution is the most concentrated?
A.50 g of NaCl / 100 g H20
B.15 g of Naci/ 100 g H2O
C.83 g of NaCi / 100 g H20
D.27 g of NaCi / 100 g H20

Answer 1

Answer:

B, i think.

Explanation:

Calculate the number of moles of solute present.

Moles of Na0H =15.0g Na0H x 1 molNa0H over 40.00g Na0H= 0.375 mol Na0H.

Calculate the liters of solution present.

volume=225mL x iL over 1000mL = 0.225 L soln

Divide the number of moles of solute by the number of liters of solution.

Molarity= 0.375mol over 0.225L =1.67 mol/L