Lead chromate is a precipitate that is formed on the reaction of lead nitrate with sodium chromate. The best method to separate this precipitate from the solution is filtration.
A precipitate can be defined as an insoluble solid formed in a chemical reaction. It appears as a cloudy and resulted after a reaction.
The lead chromate is yellow colored precipitate that forms after the reaction of lead nitrate with sodium chromate.
The process of separation of insoluble solids from the liquids by the use of filters is known as filtration. Insoluble solids are also called as precipitates these precipitates are formed in a chemical reaction.
Filtration will help in separation of insoluble solid yellow colored lead chromate precipitate from the solution using a porous material or filter that selectively inhibits the passage of solid precipitate material and allows the solution to pass through it.
According to this formula : ㏑[A] /[Ao] = - Kt when we have Ao = 0.3 m and K =0.46 s^-1 t = 20min = 0.2 x 60 =12 s So by substitution : ㏑[A] / 0.3 = - 0.46 * 12 ㏑[A] / 0.3 = - 5.52 by taking e^x for both side of the equation we can get [A] ∴[A] = 0.0012 mol dm^-3
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The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds