The titrant 0.25M HCl is being used to titrate 20mL of a solution of 100mL water...

The titrant 0.25M HCl is being used to titrate 20mL of a solution of 100mL water and 1.5g Ca(OH)2 and then again to titrate 20mL of a solution of 1.5g Ca(OH)2 and 100mL Ca(NO3)2. WHAT is the reaction between the titrant and what is being titrated? and what information can be gathered from the titration data?

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Expert Solution

The reaction is an acid-base neutralization reaction. HCl is an acid and Ca(OH)₂ is a base. The acid-base reaction that takes place between HCl and Ca(OH)₂ is as below.

2 HCl + Ca(OH)₂ --------> CaCl₂ + 2 H₂O

It is infact the formation of neutral water, H₂O and a salt (like CaCl₂) by the reaction between an acid and a base that we refer to as an acid-base neutralization reaction. HCl is the titrant and Ca(OH)₂ is being titrated.

Water acts as the solvent in the first example where we dissolve Ca(OH)₂in water to form a basic solution. Ca(NO₃)₂is the diluent in the second case which dilutes the concentration of Ca(OH)₂ by supplying the common Ca²⁺ ion.

queen_honey_blossom answered 1 year ago

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