What is concentration percent by mass of solution when 270 gram of glucose is dissolved in 730 gram of water?

Text Solution

`7.5%``20%``2.6%``4%`

Answer : A

Solution : A solution contains a solid solute (sugar ) dissolved in a liquid solvent (water),so we have to calculate the concentration of this solution in terms of the mass percentage of solute (sugar ) we, Know that : <br> Concentration of solution `=("Mass of solute")/("Mass of solution ")xx100` <br> here, Mass of solute (sugar )=30g <br> And ,Mass of solvent (water)=370g <br> So ,Mass of solution = Mass of solute + Mass of solvent <br> =30+370 <br> =400 g <br> Now ,Putting the values Of mass of solute and mass of solution in the above formula formula ,WE get : <br> Concentration of solution `=(30)/(400)xx100` <br> `=(30)/(4)` <br> 7.5 per cent (or 7.5% ) <br> THus , the concentration of this sugar solution is 7.5 per cent (or that it is a 7.5 % sugar solution).

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