Write the chemical equation of the …

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Write the chemical equation of the reaction in which following changes have taken place with an example of each 1.change in colour 2. Change in temperature 3. Formation of precipitate

Posted by P B Pujari 5 years ago

CBSE > Class 10 > Science

1 answers

Gaurav Seth 5 years ago

(i) Change in colour: Reaction between lead nitrate solution and potassium iodide solution.

Pb(NO₃)₂(aq)+2KI → PbI₂(s)+2KNO₃(aq)

In this reaction, colour changes from colourless to yellow.

(ii)Change in temperature: Action of dilute sulphuric acid on zinc.

Zn(s) + H₂SO₄(aq) → ZnSO₄(aq) + H₂

In this reaction, heat is evolved

(iii) Formation of precipitate: Action of barium chloride on sodium sulphate.

BaCl₂(aq) +Na₂SO₄(aq) → BaSO₄(s) +2NaCl(aq)

BaSO₄(s) - ppt

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Posted by Pandey Ji 6 months ago

CBSE > Class 10 > Science