Question

What molarity HCL solution forms from 0.915g HCL in 250mL of solution

Answer 1

0.1

Step-by-step explanation

Given:

mass of HCl = 0.915g

volume of HCl = 250 mL

We know the molar mass of HCl = 36,458 g/mol

Solution

Step 1: covert the volume from mL to L

1 mL = 0.001 L

therefore 250 mL = 0.25 L

Step 2: Calculate the number of moles of HCl

n = m/M where n is the moles, m is the mass and M is the molar mass

n = 0.915 g/36,458 g/mol

n = 0.025 mol

Step 3: Calculate the molarity

C = n/V where C is the molarity, n is the moles and V is the volume

C = 0.025 mol/0.25 L

C = 0.1