A student prepared some deep ruby crystals of ''chrome alum'' by treating a solution of potassium dichromate(VI) in dilute sulphuric acid with an excess of ethanol, and then crystallising the solution formed. What is the the maximum mass of chrome alum crystals that could be made from 2.94g of potassium dichromate(VI).
K2Cr2O7 + 4H2SO4 + 3CH3CH2OH --> K2SO4 + CR2(SO4)3 + 7H2O + 3CH3CHO
K2SO4 + CR2(SO4)3 + 24H2O --> K2SO4.CR2(SO403.24H2O
Im so confused please help!
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- Thread Starter
- 29-10-2015 14:01
- Official Rep
- 30-10-2015 23:30
Sorry you've not had any responses about this. Are you sure you’ve posted in the right place? Posting in the specific Study Help forum should help get responses.
I'm going to quote in Tank Girl now so she can move your thread to the right place if it's needed.
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