Precipitation Reaction
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The following equation represents double displacement reaction, what is the precipitate in this reaction?
AgNO3(aq)+NaI(aq)→AgI(s)+NaNO3(aq)
Silver iodide
Sodium nitride
Sodium iodide
Silver nitrate
- Iodide ion
- Chloride ion
- Sulphate ion
- Bromide ion
A aqueous reaction in which an insoluble product (precipitate) is formed is called
What can be inferred from the following equation?
Na2SO4(aq)+BaCl2(aq)→BaSO4(s)+2NaCl(aq)
(i) It is a double displacement reaction.
(ii) It is a precipitation reaction.
(iii) It is a decomposition reaction.
(iv) BaSO4 is soluble in water
(v) BaSO4 is precipitate.
(vi) NaCl dissolves in water.
(i), (iii), (v), (vi).
(i), (ii), (v), (vi).
(i), (ii), (iv), (vi).
(ii), (iii), (iv), (vi).
When a few drops of dilute nitric acid, followed by a few drops of barium nitrate solution were added to the 2nd portion, a white precipitate was formed. From these observations deduce the identity of substance.
On combining two aqueous solutions of soluble ionic compounds, a precipitate is formed when
the solvent is insoluble.
the reactant is insoluble.
the product is insoluble.
a gas is evolved.
A aqueous reaction in which an insoluble product (precipitate) is formed is called
AgNO3 + HCl → Product
What precipitates as a product?
AgCl
NaNO3
Ag
Na
CuSO4 (aq) + H2S (g) → CuS (ppt) + H2SO4(aq)
What is the colour of precipitate formed?
White
Yellow
Black
Blue
BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (ppt) + 2NaCl(aq)
What is the colour of precipitate formed?
White
Black
Yellow
Blue