Write an equation that represents the action in water of nitrous acid as an arrhenius acid.

1 answer:

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Arrhenius Acid:
Arrhenius Acid is any specie which when dissolved in water produces H⁺ (proton) Ions.

Nitrous Acid:
Nitrous Acid also acts as Arrhenius Acid when dissolved in water.

HNO₂ + H₂O → NO₂⁻ + H₃O⁺
Where,
H₃O⁺ ⇆ H⁺ + H₂O

As HNO₂ produces H⁺ Ions in water, so it is an Arrhenius Acid.

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Lead(II) nitrate is added slowly to a solution that is 0.0800 M in Cl− ions. Calculate the concentration of Pb2+ ions (in mol /

barxatty [35]

Answer:

$[Pb^{2+}]=3.9 \times 10^{-2}M$

this is the concentration required to initiate precipitation

Explanation:

$PbCl_2$ ⇄ $Pb^{2+}+2Cl^-$

Precipitation starts when ionic product is greater than solubility product.

Ip>Ksp

Precipitation starts only when solution is supersaturated because solution become supersaturated then it does not stay in this form and precipitation starts itself only solution become saturated.

This usually happens when two solutions containing separate sources of cation and anion are mixed together and here also we are mixing lead (||)nitrate solution(source of lead(||)) into the Cl- solution.

$Ip=[Pb^{2}][2Cl^-]^2=Ksp$