General information:
HCl is a strong acid that completely dissociates in water to produce chloride ions and hydronium ions (H3O+). The following equation can be used to accurately calculate pH of strong acid solutions with concentrations above 10-5 M:
Molecular weight (molar mass) of HCl = 36.46 g/ mole
Calculations:
pH = - log [H3O+]
pH of strong base
pH of strong acid
HCl is a strong acid that completely dissociates in water to produce chloride ions and hydronium ions (H3O+). The following equation can be used to accurately calculate pH of strong acid solutions with concentrations above 10-5 M:
pH = - log [H3O+]
Molecular weight (molar mass) of HCl = 36.46 g/ mole
Calculations:
pH = - log [H3O+]
[H3O+] = 10-pH =10-2.2 = 0.00631 mole/ liter
Volume of solution in liters = 100 ml × 0.001 (liter/ ml) = 0.1 liter
Number of moles of HCl required = 0.00631 (mole/ liter) × 0.1 liter = 0.000631 mole
Mass of HCl required = 0.000631 mole × 36.46 g/ mole = 0.023 g
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pH of strong acid
Sometimes it is inconvenient to use the concentration units. For example, a reactant’s concentration may change by many orders of magnitude. If we are interested in viewing the progress of the reaction graphically, ph calculator
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