What Are the Key Steps to Solve Stochiometry Problems?

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Discussion Overview

The discussion revolves around stoichiometry problems related to a laboratory experiment involving the reaction of copper sulfate pentahydrate with iron. Participants seek assistance in balancing chemical equations, identifying reaction types, and calculating theoretical and percent yields.

Discussion Character

  • Homework-related
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant describes their lab experiment using 12.5g of copper sulfate pentahydrate and iron, seeking help with various stoichiometry questions.
  • Another participant proposes a balanced equation for the reaction, questioning if it is correct given that Fe(II) was used.
  • A different participant suggests that the reaction is a displacement reaction, noting that iron is more reactive than copper and that water of crystallization can be omitted from the equation.
  • There is a request for clarification on the name and formula of the solid product, with one participant identifying the reactants as copper(II) sulfate and iron.
  • Another participant mentions the concept of net ionic equations, indicating that sulfate ions are spectator ions in the reaction.

Areas of Agreement / Disagreement

Participants express uncertainty about the balanced equation and the type of reaction. There is no consensus on the correct balanced equation or the interpretation of the solid product question.

Contextual Notes

Some participants indicate a lack of familiarity with certain terminology, such as "displacement reaction," and there are unresolved questions regarding the balanced equation and stoichiometric calculations.

Who May Find This Useful

Students learning about stoichiometry, chemical reactions, and those seeking help with laboratory experiments in chemistry.

ruthless
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hello guys, this is my first topic here

we jut started stochiometry in school and did a lab

we used 12.5g of copper sulfate pentahydrate and mixed it in water

and then we added fe (ii) and slowly heated it

then i decanted the extra water and measured the total mass

it was 2.57g total

i was asked to answer these ollowing questions
someomeof them i know but i don know the balanced equation or percent yiled calculations

1.what is the type of rxn that tok place? double replacement?

2. write the word equation and the BALANced formmula equation for thisreaction. inculde states of matter
its cuso4 + fe = cu + feso4 + 5h2o right? i do not think its balanced though

3.what is the name and formula of the solid product? i do not get what this question is asking me

lol i don't know neof these

i got this too

4.start by using the mass of iron powder and complete the folowing: i can get these if i get the right balanced equation
a.what is the mole ration for this reaction?
b.calculate the amount of moles of product
c.calc the theoretical yeild in grams of the product

5.what is the actual yield of the product?

6.calc the percent yiled of the product

7.based on your calc percent yiled, describe two source of error from your experiment

any help would be appreciated

thing is due tommorow >.< i cqan answer some of these if i know the anwsers to others

thanks, ruth
 
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CuSO4*5H2O(aq) + Fe(s) = Cu(s) + FeSO4(aq) + 5 H2O(g)

is that the right eq balanced if fe2+ was used?
 
/i figured out answers to most with the bequation but can u guys tell me if the eq is right
 
displacement reaction occurs. (Fe is more reactive than Cu)

you can omit the water of crystallisation. when you dissolve solid CuSO4 solid you get Cu2+ and SO42- ions. the water of crystallisation does not take part in the reaction.

CuSO4 + Fe -----> FeSO4 + Cu
 
3.what is the name and formula of the solid product? i do not get what this question is asking me

the reactants are copper(11) sulphate and Iron. What are the products?
 
when u mean displacement...single replacement right?
we didnt learn displacement maybe what ur saying is the smething
 
Go net ionic. SO4-2 is only a spectator.