How Much Precipitate Forms in a Copper Sulfate and Sodium Hydroxide Reaction?

  • Thread starter Thread starter Zoey Brown
  • Start date Start date
Click For Summary
The discussion centers on calculating the mass of precipitate formed in a reaction between copper(II) sulfate and sodium hydroxide. A solution of copper(II) sulfate is prepared, and when mixed with sodium hydroxide, a precipitate of copper(II) hydroxide (Cu(OH)2) forms. The initial calculation yielded a mass of 0.762g for the precipitate, but there is uncertainty about whether the correct limiting reagent was identified, as both sodium hydroxide and copper sulfate could limit the reaction. Additionally, the ambiguity regarding the form of copper sulfate—whether it is pentahydrate or anhydrous—adds complexity to the calculation. Clarifying these details is essential for an accurate determination of the precipitate mass.
Zoey Brown
Messages
17
Reaction score
0

Homework Statement


A solution of copper 2 sulphate is prepared by placing 5.80g of copper 2 sulphate in a flask and adding enough water to prepare 125 ml of solution. When a 25.0ml sample of this solution is added to 125ml of 0.125 mol/L sodium hydroxide a precipitate forms. Calculate the mass of the precipitate formed in the reaction.

Homework Equations


n=cv
m=nM

The Attempt at a Solution


The percipitate i found would be cu(OH)2 which would have the same mole as NaOH (n=cv) and then u would use the formula m=nM to find mass. The answer i got is 0.762g but i didnt use any info about the copper 2 sulphate, is this right?
 
Physics news on Phys.org
You have to find what is the limiting reagent - it can be NaOH, it can be copper sulfate.

I find the question ambiguous - it doesn't say whether it is a copper sulfate pentahydrate (the most common form) or the anhydrous form.
 

Thread 'Prove that evolution is constant (Provide at least two arguments to support your position)'

I don't get how to argue it. i can prove: evolution is the ability to adapt, whether it's progression or regression from some point of view, so if evolution is not constant then animal generations couldn`t stay alive for a big amount of time because when climate is changing this generations die. but they dont. so evolution is constant. but its not an argument, right? how to fing arguments when i only prove it.. analytically, i guess it called that (this is indirectly related to biology, im...
View full post »

Similar threads

Identify Bottles: Lead Nitrate, HCl, Copper Sulfate, Sodium Carbonate
  • · Replies 4 ·
Replies
4
Views
2K
Solving Copper (II) Salt Titration Problem
  • · Replies 9 ·
Replies
9
Views
3K
Predicting Precipitates: A Double Displacement Homework Exercise
  • · Replies 0 ·
Replies
0
Views
6K
What Happens to Copper (II) Chloride Solution Under Different Conditions?
  • · Replies 3 ·
Replies
3
Views
5K
How Much Sodium Is Required to Produce 8g of Sodium Hydroxide?
  • · Replies 4 ·
Replies
4
Views
3K
Why Does Copper Hydroxide Behave Differently with Ammonia in Reactions?
  • · Replies 1 ·
Replies
1
Views
3K
Easy Stoichiometry Concentration Problem
  • · Replies 4 ·
Replies
4
Views
2K
Which Ion Forms a White Precipitate with Dilute HCl That Dissolves When Warmed?
  • · Replies 4 ·
Replies
4
Views
3K
Calculating Theoretical Yield for Copper Reactions: Help with Homework
  • · Replies 16 ·
Replies
16
Views
22K
Is Sodium Metal the Reducing Agent in Its Reaction with Water?
  • · Replies 3 ·
Replies
3
Views
6K