Friday, November 27, 2015

If 10.3 gm lithium sulfate react with an abundant amount of potassium phosphate, what mass of lithium phosphate can you expect to isolate?

The reaction between lithium sulfate and potassium phosphate is a a double displacement reaction. This reaction can be written as:


`3 Li_2SO_4 + 2 K_3PO_4 -> 2 Li_3PO_4 +3 K_2SO_4`


In this well-balanced chemical reaction, we can see that lithium replace potassium and vice-versa and hence this is a double displacement reaction. 


Molar masses of lithium sulfate = 2 x 7 + 32 + 4 x 16 = 110 g/mol


Molar mass of lithium phosphate...

The reaction between lithium sulfate and potassium phosphate is a a double displacement reaction. This reaction can be written as:


`3 Li_2SO_4 + 2 K_3PO_4 -> 2 Li_3PO_4 +3 K_2SO_4`


In this well-balanced chemical reaction, we can see that lithium replace potassium and vice-versa and hence this is a double displacement reaction. 


Molar masses of lithium sulfate = 2 x 7 + 32 + 4 x 16 = 110 g/mol


Molar mass of lithium phosphate = 3 x 7 + 31 + 4 x 16 = 116 g/mol


Using stoichiometry:


3 moles of lithium sulfate produces 2 moles of lithium phosphate, 


or, 3 x 110 g lithium sulfate produces 2 x 116 g lithium phosphate


or, 10.3 g lithium sulfate produces (2 x 116) x 10.3 / (3 x 110) 


 = 7.24 g.


Thus, 10.3 g of lithium sulfate will produce 7.24 g lithium phosphate.


Hope this helps. 


No comments:

Post a Comment

What is the Exposition, Rising Action, Climax, and Falling Action of "One Thousand Dollars"?

Exposition A "decidedly amused" Bobby Gillian leaves the offices of Tolman & Sharp where he is given an envelope containing $1...