Final answer:
To neutralize the HI solution, we can use the balanced equation and stoichiometric ratio to determine the volume of Ca(OH)2 needed.
Step-by-step explanation:
To find the volume of 0.410 M Ca(OH)2 needed to neutralize 221 mL of a 0.280 M HI solution, we can use the balanced equation between Ca(OH)2 and HI:
Ca(OH)2 + 2HI → CaI2 + 2H2O
The stoichiometric ratio between Ca(OH)2 and HI is 1:2. This means that for every mole of Ca(OH)2, we need 2 moles of HI. Using the given concentrations and volumes, we can calculate the amount of HI reacted and from there determine the volume of Ca(OH)2 needed.
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