What reagent could be used to separate Br- from NO3- when added to an aqueous solution containing both?
2 answers:
Answer:
The correct answer is silver nitrate solution that is .
Explanation:
To separate from
ions we will use silver nitrate solution. On addition of silver nitrate solution in a mixture of bromide and nitrate ions.
The silver ion will react with bromide ions to form silver bromide which will get precipitated out as yellow color solid from a mixture.
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Answer:
No additional information is required in order to calculate the molality of the solution.
Explanation:
Mole fraction of water =
Mole fraction of sucrose =
From the given mole fraction of water mole fraction of sucrose can be determined.
And from both values of mole fraction moles of water and sucrose can also be calculated.
After calculating the moles of water convert them into mass of water in grams and then change that into kilograms say that be M'.
Finally we can determine the molality of solution ;
Molality of the sucrose solution ;
From this we can conclude that no additional information is required in order to calculate the molality of the solution.