CBSE Class 10 Science 2020 · Paper 31/4/1 · Question 15(a)
Lead nitrate solution is added to a test tube containing potassium iodide solution.
- (a)Write the name and colour of the compound precipitated.
- (b)Write the balanced chemical equation for the reaction involved.
- (c)Name the type of this reaction justifying your answer.
Answer
Yellow lead iodide, , precipitates in a double displacement (precipitation) reaction between lead nitrate and potassium iodide.
(a) Lead iodide, ; it is yellow in colour.
(b)
(c) Double displacement reaction: the two compounds exchange their ions, lead pairing with iodide and potassium with nitrate. Since an insoluble yellow solid forms, it is also a precipitation reaction.
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