Which of the following solutions has the highest concentration?
Practice Questions
Q1
Which of the following solutions has the highest concentration?
0.1 M NaCl
0.2 M KCl
0.05 M CaCl2
0.3 M MgSO4
Questions & Step-by-Step Solutions
Which of the following solutions has the highest concentration?
Step 1: Understand that concentration can be measured in molarity (M), which tells us how many moles of a substance are in one liter of solution.
Step 2: Look at the given solutions and their molarity values: 0.1 M NaCl, 0.2 M KCl, 0.05 M CaCl2, and 0.3 M MgSO4.
Step 3: Calculate the effective concentration of CaCl2. Since CaCl2 dissociates into 3 ions (1 Ca^2+ and 2 Cl^-), we multiply its molarity by 3: 0.05 M * 3 = 0.15 M.
Step 4: Now we have the following concentrations: 0.1 M for NaCl, 0.2 M for KCl, 0.15 M for CaCl2, and 0.3 M for MgSO4.
Step 5: Compare all the concentrations: 0.1, 0.2, 0.15, and 0.3.
Step 6: Identify the highest concentration, which is 0.3 M from MgSO4.
