Question

Tantalum metal is produced by reaction of potassium heptafluorotantalate (K2TaF7) with elemental sodium (Na) in a reactor heated to 850oC. The by-products are potassium fluoride (KF) and sodium fluoride (NaF). The reactor is charged with 208.0 kg of K2TaF7 and 28.0 kg of Na. Assume that the reaction goes to completion.
The reactor contents at the completion of this reaction will be the following:
Enter the number of kg of K2TaF7 remaining:
a)the number of kg of Na remaining:
b)the number of kg of Ta present:
c)the number of kg of KF present:
d)the number of kg of NaF present:

Answer 1

This is a limiting reagent problem. Here is a post I posted to solve ALL limiting reagent problems. Just follow the steps.
http://www.jiskha.com/science/chemistry/limiting_reagent_problem.html

Answer 2

Many thanks.

Answer 3

Sorry but I couldent make it :(

Answer 4

Work it out yourself. If you'd done the practice exercises you'd have no problem.

Answer 5

Please don't spam.