Question

What would be the formula of the precipitate that forms when pb(no3)2 (aq) and k2so4 (aq) are mixed? pbk2 pbso4 h2o none of the above k(no3)2?

Answer 1

The formula of the precipitate that will be formed is PbSO4.
When lead ll nitrate react with potassium sulphate, one of the product formed is lead sulphate. The reaction is a double decomposition precipitation reaction; PbSO4 is the precipitate formed. 

Answer 2

Answer:

$\rm PbSO_4$ will precipitate in the given reaction.

Explanation:

The reaction takes place between lead nitrate $\rm Pb(NO_3)_2$ and potassium sulphate $\rm K_2SO_4$.

Now, the reaction will be a double displacement reaction in which the ions will exchange between lead nitrate $\rm Pb(NO_3)_2$ and potassium sulphate $\rm K_2SO_4$.

So, the chemical reaction can be written as,

$\rm {Pb(NO_3)_2+K_2SO_4}\rightarrow PbSO_4+2KNO_3$

In the above equation, $\rm PbSO_4$ is a precipitate which will be settled down in the  bottom and $\rm KNO_3$ will form an aqueous solution.

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