Respuesta :
Answer:
The pH of the hydrochloric solution is 2.32
Explanation:
Step 1: Data given
Mass of HCl = 0.70 grams
Volume = 4.0 L
Molar mass of HCl = 36.46 g/mol
Step 2: Calculate moles HCl
Moles HCl = mass HCl / molar mass HCl
Moles HCl = 0.70 grams / 36.46g/mol
Moles HCl = 0.0192 moles
Step 3: Calculate molarity
Molarity HCl = moles HCl / volume
Molarity HCl = 0.0192 moles / 4.0 L
Molarity HCl = 0.0048 M
Step 4: Calculate molarity H+
For 1 mol HCl we have 1 mol H+
Molarity HCl = molarity H+ = 0.0048 M
Step 5: Calculate pH
pH = -log[H+]
pH = -log (0.0048)
pH = 2.32
The pH of the hydrochloric solution is 2.32
