Exam (elaborations) Experiment- Molar Solubility, Common-ion Effect (CHM111)
Abstract
The purpose of this experiment was to understand the molar solubility and solubility constant of Calcium Hydroxide, Ca(OH)2. Many principles were involved such as, Molar solubility is the number of moles of s...
The purpose of this experiment was to understand the molar solubility and solubility constant
of Calcium Hydroxide, Ca(OH)2. Many principles were involved such as, Molar solubility is the
number of moles of salt that dissolves per liter of (aqueous solution), Solubility Product is the
equilibrium constant for a slightly soluble salt at Dynamic Equilibrium, and Common-Ion Effect
is the effect of an ion on the position of the equilibrium (Beran, 2013). In this experiment, a
Titration procedure was conducted, where 0.05 M concentrations of HCl was added to the
basic solution of Calcium Hydroxide to reach the stoichiometric point (indicated by methyl-
orange indicator). The molar solubility of Ca (OH) 2 in solution was 1.5 x 10-2 mol/L and the
average solubility product (Ksp) was 1.3 x 10-5 for Ca (OH) 2. Definitely the hypothesis of this study
was accepted, as first, Calcium Hydroxide being less soluble substance and HCl as being a
strongly titrating solution, so the solubility product would become less saturated, and as the
Common- Ion Effect did occur, so the molar solubility decreased and the equilibrium shifted
to the left (reactants).
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller frackasaura. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.94. You're not tied to anything after your purchase.
