Chemistry, asked by chemistryscience43, 9 months ago

calculate the amount of sugar that should be dissolved in 75 gram of water to prepare a 25% solution of it
class 9 chemistry chapter 2​

Answers

Answered by Anonymous
4

GIVEN:-

  • Mass of Solvent(water)=75g

  • Mass of Solute(Sugar)=x

  • Mass percentage of sugar in Solution= 25%

TO FIND:-

  • Mass of Solute i.e.x

FORMUALE USED:-

{\boxed{\rm{Mass\:by\:Mass\: Percentage \:Solution=\dfrac{Mass\:of\:Solute} {Mass\:of\:Solution}\times{100}}}}

Where,

mass of Solution= Mass of solvent+ Mass of Solute .

Now,

\implies\rm{25=\dfrac{x}{75+x}\times{100}}

\implies\rm{25=\dfrac{100x}{75+x}}

\implies\rm{1875+25x=100x}

\implies\rm{1875=75x}

\implies\rm{x=\dfrac{1875}{75}}

\implies\rm{x=25}

Hence,we need 25 gram of Sugar to prepare 25% Solution of it.

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