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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: xnotorious on September 03, 2010, 12:56:17 AM

Title: Predicting Products
Post by: xnotorious on September 03, 2010, 12:56:17 AM

How do i predict the products? i can balance them, just not predict the products.

BaI2 + Li2SO4

K + 02

FeSO4 + Ca

Title: Re: Predicting Products
Post by: MrTeo on September 03, 2010, 02:40:26 AM

1st and 3rd reaction:

Dissolving those compunds in water you get a mixture of anions and cations: the only reaction possible is the precipitation of an "insoluble" salt. Checking the K_sp values you'll see that:

(CaSO₄) K_sp=2.4∙10^-5
(BaSO₄) K_sp=1.1∙10^-10

2nd reaction:

It's simply the oxidation of an alkali metal due to oxygen. What is the only oxidation state of alkali metals?

Title: Re: Predicting Products
Post by: Borek on September 03, 2010, 03:21:24 AM

There is no simple answer to second reaction, as it depends on the conditions. The most obvious answer is the wrong one.