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?

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 2 years ago

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