Chemistry, 18.03.2021 02:50 breeannaalanizj2000
Please help i have 20 min please
it is required to prepare 250ml of potassium dichromate solution (S) of formula K2Cr207 of molar concentration 0.2mol/l.
1- calculate the mass of potassium dichromate needed to prepare (S).
2- calculate the mass concentration of (s).
3- write the dissociation equation.
4. determine the molar concentration of the ions.
5- Describe the procedure of preparation of solution (S).
given: K =39 Cr=52 0-16
Answers: 1
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it is required to prepare 250ml of potassium dichromate solution (...
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