Which solution will contain the higher concentration of chloride ions? 0.31mol/l sodium chloride or 0.16mol/l magnesium chloride
sodium chloride
Well, if we're talking about concentration, I'd have to say that it's a tricky question. You see, the concentration of chloride ions depends on the total amount of chloride ions present in the solution. So, let's do some math!
In the 0.31mol/l sodium chloride solution, you have 0.31 moles of sodium chloride and since each sodium chloride molecule contains one chloride ion, you also have 0.31 moles of chloride ions.
In the 0.16mol/l magnesium chloride solution, you have 0.16 moles of magnesium chloride. However, each magnesium chloride molecule contains two chloride ions. So, you actually have 0.32 moles of chloride ions.
So, drumroll, please! The winner is the 0.16mol/l magnesium chloride solution! It contains a higher concentration of chloride ions. But hey, regardless of the concentration, don't go drinking these solutions like a clown would at a lemonade stand. Stick to drinking water instead!
To determine which solution contains the higher concentration of chloride ions, we need to compare the molar concentrations of sodium chloride (NaCl) and magnesium chloride (MgCl2).
First, let's find the number of chloride ions in each compound:
1 mole of NaCl contains 1 mole of chloride ions.
1 mole of MgCl2 contains 2 moles of chloride ions.
Now, we can calculate the number of moles of chloride ions in each solution:
For the 0.31 M NaCl solution:
0.31 mol/L x 1 mol Cl-/1 mol NaCl = 0.31 mol/L chloride ions
For the 0.16 M MgCl2 solution:
0.16 mol/L x 2 mol Cl-/1 mol MgCl2 = 0.32 mol/L chloride ions
Comparing the results, we can see that the 0.16 M magnesium chloride solution contains a higher concentration of chloride ions (0.32 mol/L) than the 0.31 M sodium chloride solution (0.31 mol/L).
To determine which solution will contain a higher concentration of chloride ions, we need to compare the number of chloride ions present in each solution.
To do this, we can use the concept of molarity, which is a measure of the concentration of a solution. The molarity (M) is defined as the number of moles of solute per liter of solution.
In the case of sodium chloride (NaCl), the molarity is given as 0.31 mol/l. This means that for every liter of solution, there are 0.31 moles of sodium chloride present.
The molecular formula of sodium chloride is NaCl, which dissociates into one sodium ion (Na+) and one chloride ion (Cl-) in solution. Therefore, in this case, the concentration of chloride ion equals the concentration of sodium chloride.
So, the concentration of chloride ions in the sodium chloride solution is 0.31 mol/l.
Similarly, for magnesium chloride (MgCl2), the molarity is given as 0.16 mol/l. The molecular formula of magnesium chloride is MgCl2, which dissociates into one magnesium ion (Mg2+) and two chloride ions (2Cl-) in solution.
As there are two chloride ions per magnesium chloride molecule, the concentration of chloride ions in the magnesium chloride solution is double the concentration of magnesium chloride.
So, the concentration of chloride ions in the magnesium chloride solution is 2 × 0.16 mol/l = 0.32 mol/l.
Therefore, the solution with the higher concentration of chloride ions is the 0.16 mol/l magnesium chloride solution.