Respuesta :
First you find moles of HCl.
8.53gHCl(1 mol HCl/36.46gHCl)=0.234mol HCl
Then since molar it is mol/L you divide the number on moles of HCl by the amount of solution in L (0.372L).
Good luck!
8.53gHCl(1 mol HCl/36.46gHCl)=0.234mol HCl
Then since molar it is mol/L you divide the number on moles of HCl by the amount of solution in L (0.372L).
Good luck!
Answer:
M = 0.629 M
Explanation:
To calculate the molarity of any solution, you need to use the following expression:
M = n/V (1)
Where:
M: Molarity or concentration of solution (mol/L or M)
n: moles of solute (moles)
V: Volume of solution (In Liters)
But in order to use the above expression, we need to calculate the moles of the HCl, which is calculate with the following expression:
n = m/MM (2)
Where:
m: mass of the HCl (g)
MM: molar mass of HCl (g/mol)
The reported molar mass of HCl is 36.46 g/mol.
Calculating first the moles, using (2) we have:
n = 8.53 / 36.46 = 0.234 moles
Now that we have the moles, we can calculate the molarity, but first we need to pass the volume from mL to Liter:
V = 372 / 1000 = 0.372 L
Finally, let's calculate the molarity using (1) and the value of the obtained moles:
M = 0.234 / 0.372
M = 0.629 M
And this is the molarity of the HCl solution
