Question

What will you observe when - (a)Red litmus paper is introduced in a solution of sodium carbonate. (b)Potassium iodide solution is added in lead nitrate solution. (c)Crystals of copper sulphate are heated​

Answer 1

Answer:

(i) It turns red litmus to blue as it is basic in nature

(ii)Lead nitrate solution contains particles (called ions) of lead, potassium iodide contains particles (called ions) of iodide. When the solutions mix, the lead particles and iodide particles combine to form a new substance, lead iodide, which is a yellow solid.