189k views
3 votes
Sterile water is added to 2 grams of sodium chloride to make 100ml of solution.

a. whay is the concentration (stated as percent)?
b. is the solution hopotonic or hypertonic to human cells?

User Jholloman
by
5.1k points

1 Answer

6 votes

Answer:

2 % of NaCl concentration

The solution is hypertonic to human cells

Step-by-step explanation:

% Concentration = (g solute / g solution) * 100

Therefore

% Concentration of NaCl = (2 g NaCl/ 100 g solution) * 100

The concentration of the solution equals 2 %

Isotonic solutions for human red cells have a concentration of 0.9 % of NaCl. A concentration of 2 % of NaCl is above 0.9 %, so the solution is hypertonic, since you have more concentration of solute (NaCl) outside the cell, than inside the cell ( inside the side you have only 0.9 % NaCl). So the cell will shrink.

User Swivel
by
5.5k points