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Started stochiometry in school

  • Thread starter ruthless
  • Start date
  • #1
9
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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 dont 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
 
Last edited:

Answers and Replies

  • #2
9
0
CuSO4*5H2O(aq) + Fe(s) = Cu(s) + FeSO4(aq) + 5 H2O(g)

is that the right eq balanced if fe2+ was used?
 
  • #3
9
0
/i figured out answers to most with the bequation but can u guys tell me if the eq is right
 
  • #4
437
1
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
 
  • #5
437
1
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?
 
  • #6
9
0
when u mean displacement...single replacement right?
we didnt learn displacement maybe what ur saying is the smething
 
  • #7
Borek
Mentor
28,299
2,684
Go net ionic. SO4-2 is only a spectator.
 

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