15.00 mL of 0.200 M KI is combined with several other solutions (none of which contain K+) to produce a final solution with a volume of 60.00 mL.
Calculate the concentration (in moles per litre) of K+ in the final solution.
Well, since the volume of the final solution is 60.00 mL, let's convert that to liters, shall we?
60.00 mL is equal to 0.06000 L.
Now, let's find out how many moles of KI are in the initial solution.
The initial volume of KI is 15.00 mL, which is equivalent to 0.01500 L.
To calculate the moles of KI in the initial solution, we can use the formula:
moles = concentration (in M) x volume (in L)
So, moles of KI = 0.200 M x 0.01500 L = 0.003 moles
Since KI dissociates into one K+ ion for every one KI molecule, the concentration of K+ in the solution would also be 0.003 moles.
Therefore, the concentration of K+ in the final solution is 0.003 moles per liter.
Now, I hope that answer didn't leave you feeling "K"racked up!
To calculate the concentration of K+ in the final solution, we need to determine the number of moles of K+ in the 15.00 mL of 0.200 M KI solution.
First, let's calculate the number of moles of KI in the solution:
moles of KI = volume (in liters) × concentration
= 0.015 L × 0.200 mol/L
= 0.003 mol
Since KI dissociates into one K+ ion and one I- ion, the number of moles of K+ is the same as the number of moles of KI.
Therefore, the concentration of K+ in the final solution is:
concentration = moles of K+ / volume of final solution
= 0.003 mol / 0.060 L
= 0.050 mol/L
So, the concentration of K+ in the final solution is 0.050 mol/L.
To calculate the concentration of K+ in the final solution, you will need to determine the number of moles of K+ in the initial 15.00 mL of 0.200 M KI solution, and then use that value to calculate the concentration in moles per litre of the final solution.
First, let's calculate the number of moles of K+ in the initial KI solution using the concentration and volume:
Moles of KI = concentration of KI x volume of KI solution
= 0.200 M x 0.015 L
= 0.003 moles KI
Since KI has a 1:1 ratio of K+ to KI, the number of moles of K+ in the initial solution is also 0.003 moles.
Next, we need to calculate the final volume of the solution, which is 60.00 mL.
Now, we can calculate the concentration of K+ in moles per litre in the final solution:
Concentration of K+ = Moles of K+ / Volume of final solution
= 0.003 moles / 0.060 L
= 0.05 M
Therefore, the concentration of K+ in the final solution is 0.05 M (moles per litre).
tina, lino, et al.
This is worked the same way I showed you earlier.