Q. 53.9( 33 Votes )
When blue ink is heated, what do you think has got evaporated from the watch glass?
Answer :
On heating the blue ink which is a mixture of water (volatile) and dye (non-volatile), the solvent water got evaporated from the watch glass leaving the solute, dye. The process involved is evaporation of water.
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What is the need to heat solution?
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