Concentrated HCL acid is 38% by weight of HCL and has a density of 1.19 g/ml. What is the morality of HCL?

This is the person asking the question: I ended up getting 12.40M but im pretty sure that's wrong. =/

I calculated 12.41 which rounds to 12.4M. I don't know how MORAL that solution is but the MOLARITY is 12.4.

If you meant MOLALITY that's a different story.

To determine the molarity of HCl, we need to convert the given composition of the concentrated HCl acid (by weight) into moles, and then divide by the volume in liters.

Step 1: Calculate the mass of HCl in the solution
Assuming we have 100 g of the concentrated HCl acid, 38% of it is HCl:
Mass of HCl = 38 g

Step 2: Convert the mass of HCl to moles
To convert grams to moles, we need to know the molar mass of HCl. The molar mass of HCl is the sum of the atomic masses of hydrogen (H) and chlorine (Cl).

Molar mass of HCl = atomic mass of H + atomic mass of Cl
Molar mass of HCl = (1.01 g/mol) + (35.45 g/mol)
Molar mass of HCl = 36.46 g/mol

Moles of HCl = Mass of HCl / Molar mass of HCl
Moles of HCl = 38 g / 36.46 g/mol
Moles of HCl ≈ 1.04 mol

Step 3: Convert to molarity
To convert to molarity, we divide the moles of HCl by the volume of the solution in liters. We need to find the volume of the solution.

Given density = 1.19 g/mL and assuming 100 g of the solution:
Volume of the solution = Mass of the solution / Density
Volume of the solution = 100 g / 1.19 g/mL
Volume of the solution ≈ 84.03 mL

Convert mL to L:
Volume of the solution = 84.03 mL * (1 L / 1000 mL)
Volume of the solution ≈ 0.08403 L

Finally, calculate the molarity of HCl:
Molarity of HCl = Moles of HCl / Volume of the solution in liters
Molarity of HCl = 1.04 mol / 0.08403 L
Molarity of HCl ≈ 12.37 M

Therefore, the molarity of HCl in the concentrated HCl acid is approximately 12.37 M.

To find the molarity of HCl in the concentrated solution, we need to use the given percentage by weight and density values.

Step 1: Calculate the molar mass of HCl
The molar mass of HCl is the sum of the atomic masses of hydrogen (H) and chlorine (Cl). Using the periodic table, we find that hydrogen (H) has an atomic mass of approximately 1 g/mol, and chlorine (Cl) has an atomic mass of approximately 35.5 g/mol. Therefore, the molar mass of HCl is 1 + 35.5 = 36.5 g/mol.

Step 2: Calculate the grams of HCl in 1 ml of concentrated HCl acid
The density of the concentrated HCl acid is given as 1.19 g/ml. So, in 1 ml of the solution, there are 1.19 grams of the solution.

Step 3: Calculate the grams of HCl in 1 ml of concentrated HCl acid
The concentrated HCl acid is reported to be 38% by weight HCl. Therefore, in 1 ml of the solution, 38% of it is HCl, and the remaining 62% is water (since the density of the solution provides the total weight).

Grams of HCl in 1 ml of HCl acid = 1.19 g/ml × 38% = 0.4522 g

Step 4: Calculate the number of moles of HCl in 0.4522 g
To calculate the number of moles, we divide the mass of HCl by its molar mass.

Moles of HCl = Grams of HCl / Molar mass of HCl
= 0.4522 g / 36.5 g/mol
= 0.01239 mol

Step 5: Calculate the molarity of HCl
The molarity of a solution is defined as the number of moles of solute (in this case, HCl) per liter of solution.

Molarity (M) = Moles of solute / Volume of solution (in liters)
= 0.01239 mol / 1 L
= 0.01239 M

Thus, the molarity of HCl in the concentrated solution is 0.01239 M.