Answer:
The answer to your question is: pH = 1.42
Step-by-step explanation:
Data
mass = 0.73 g of HCl
volume = 500 ml = 0.5 l
MW HCl = 36.5 g
36.5 g of HCl ------------------- 1 mol
0.73 g -------------------- x
x = (0.73 x 1) / 36.5
x = 0.019 mol
Molarity = 0.019 / 0.5
Molarity = 0.038
pH = -log [H+]
pH = - log [0-038]
pH = 1.42