Ksp Video Lessons

Concept:

# Problem: Excess Ca(OH)2 is shaken with water to produce a saturated solution. The solution is filtered, and a 60.00 mL sample titrated with HCl requires 11.18  mL of 0.0978 M HCl to reach the end point.Calculate Ksp for Ca(OH)2.

###### FREE Expert Solution

We are asked to calculate the Ksp of Ca(OH)2 when it is shaken with water to produce a saturated solution. This solution is filtered and a 60.00 mL sample and was titrated with HCl requiring 11.18 mL of 0.0978 M HCl to reach the endpoint.

Step 1: First, we will get the number of moles of hydroxide. The reaction that happens during titration is:

Ca(OH)2 (aq)   +   2 HCl (aq)  →  CaCl2 (aq)    +  2 H2(l)

A coefficient of two (2) is added to HCl and H2O to balance the equation.

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###### Problem Details

Excess Ca(OH)2 is shaken with water to produce a saturated solution. The solution is filtered, and a 60.00 mL sample titrated with HCl requires 11.18  mL of 0.0978 M HCl to reach the end point.

Calculate Ksp for Ca(OH)2.