Question

Q11-Write two observations for the following chemical reactions.
a) Dilute sulphuric acid is poured over zinc granules.
b) Potassium iodide is added to lead nitrate solution.
c) Lead nitrate is heated in a hard glass test tube.​

Answer 1

Answer:

Heat is evolved and precipitate is formed

Explanation:

it is observed at when dilute sulphuric acid is added to zinc granules heat is evolved and when lead nitrate is added to hard glass test tube a precipitate is formed

Answer 2

Answer:

1) H2 is released, temperature increases.

2) yellow precipitate of lead iodide is formed, double displacement reaction occurs.

3) NO3 is released,brown fumes are released sometimes oxygen in di-atomic form also gets released.

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