write the chemical equation of the reaction with an example each in which the following changes have taken place: 1) change in temperature 2) change in colour 3) formation of precipitate.
Answers
Answered by
2
2BaCl gives 2 Ba+Cl2
Ca(Co)3 gives Ca+Co2+o2
Ca(Co)3 gives Ca+Co2+o2
Answered by
9
Answer:
1. Change in colour :
The reaction between lead nitrate solution and poassium iodide solution.
Chemical equation as follow :
Pb ( NO₃ )₂ + 2 KI ⇒ PbI₂ + 2 KNO₃
In above reaction colour change from colourless to yellow.
2. Change in temperature :
The reaction between dil. sulphuric acid on zinc.
Chemically :
Zn + H₂SO₄ ⇒ ZnSO₄ + H₂
Heat evolved in the above reaction.
3. Formation of precipitation :
The reaction between barium chloride on sodium sulphate.
Chemically :
BaCl₂ + Na₂SO₄ ⇒ BaSO₄ + 2 NaCl
In the above reaction white ppt. of BaSO₄ will form.
Similar questions