Both kbr and nabr are soluble ionic compounds and fully dissociate in aqueous solution. a 21.545-g mixture of kbr and nabr is dissolved in water, then a solution of agno3 is added so that all of the bromine present is converted to solid agbr. the agbr product is dried and found to have a mass of 35.593 g. what mass of kbr was present in the original mixture?

Explanation:

Let the molar mass of KBr is and NaBr is .

In 21.545 g, the moles of KBr and NaBr are and .

Therefore,   = 21.545 g

Mass of AgBr is 35.593 g.

            = 35.593 g

    = 35.593 g

        = 35.593 g

Now, putting the given values into the above formula as follows.

                    =

                    =

                    = 0.224 mol

Hence, mass of KBr will be calculated as follows.

                          = 26.656 g

Thus, we can conclude that mass of KBr present in the original mixture is 26.656 g.