1.

Find the concentration of solution in terms of weight percent if 20g of common salt is dissolved in 50g of water.

Answer»

Solution :Weightpercent`= (" weightof thesolute ")/(" weightof the solute+ Weightof THESOLVENT") xx 100`
Weightof thecommonsalt( solute ) = 20g
` THEREFORE ` Weightpercent `=( 20) /( 20+50 ) xx 100`
`=( 20 )/(70) xx 100 = 28.57 % `
`therefore` Weightpercent`= 28.57 %`


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