1mL of 0.1M HCl solution is diluted 1000 times. What will be the pH of the diluted solution?
Answer:
Millimoles of HCl taken = Millimoles of H+ taken = 1mL × 0.1M = 0.1
Concentration of the diluted HCl solution = (0.1mmol / 1000mL) = 0.0001M
Concentration of H+ in diluted solution = 0.0001M
pH = -log [H+]
So, pH = -log (0.0001) = 4
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