Interview
Grade 11 Chemistry Precipitation Reaction Problems/Solutions
Grade 11 Chemistry Precipitation Reaction Problems/Solutions
[Show more]
Seller
Follow
Content preview
Precipitation Reaction Problems1. A solution contains 0.71 mol of aluminum chloride in a 910 mL solution. Calculate
the molarity of all the ions (Al and Cl) in the solution.
Molarity = moles ÷ L
M = 0.71 mol ÷ 0.91 L
= 0.78 mol/L AlCl
∴ 0.71 M is the molarity.
2. 141 mL of 1.2 M aluminum nitrate is mixed with 85 mL of 0.27 M sodium
carbonate.
a. Write a balanced equation for the reaction.
2Al(NO₃)₃ + 3Na₂CO₃ → Al₂(CO₃)₃ + 6NaNO₃
b. Write ionic equations for the reaction.
2Al ³⁺ + 3CO₃ ²⁻ → Al₂(CO₃)₃
and
Na ¹⁺ + NO₃ ¹⁻ → NaNO₃
c. Give the name of any precipitate that has formed.
, Al₂(CO₃)₃ is the precipitate as it is insoluble.
d. Write the net ionic equation for the reaction.
2Al ³⁺ + 3CO₃ ²⁻ → Al₂(CO₃)₃ (s)
e. Find the number of moles of precipitate that has formed.
Molarity [Al(NO₃)₃] = moles ÷ L
moles [Al(NO₃)₃] = M x L
= 1.2 x 0.141
= 0.1692 mol Al(NO₃)₃
moles [Na₂CO₃] = M x L
= 0.27 x 0.085
= 0.0223 mol Na₂CO₃
2Al(NO₃)₃ + 3Na₂CO₃ → Al₂(CO₃)₃ + 6NaNO₃
0.1692 mol Al(NO₃)₃ ÷ 2 mol Al(NO₃)₃ x 1 mol Al₂(CO₃)₃ = 0.0846
mol Al₂(CO₃)₃
∴ 0.0846 mol of precipitate is formed.
f. Find the mass of precipitate that has formed.
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 timeforminecraft2002. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$4.43. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
68443 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 15 years now