Science, asked by iTzUniqBoY, 6 months ago

wConcentration of CHCl3 is 10 ppm.The %(w/w) will be
(A) 10-3%(w/w)
(B) 8%(w/w)
(C) 10 %(w/w)
(D) 12%(w/w)​

Answers

Answered by BʀᴀɪɴʟʏAʙCᴅ
1

\huge\mathcal{\underline{\color{blue}QUESTION}}

⭐ Concentration of CHCl3 is 10 ppm . Then the %(w/w) will be,

\huge{\orange{\boxed{\fcolorbox{lime}{cadetblue}{\pink{ANSWER}}}}} \\

  • The concentration of chloroform = 10 ppm

∴ 10⁶ g of solution contains 10 g chloroform .

☕ Thus, 1000g of solution contains \bf{\dfrac{10}{10^6}\:=\:10^{-5}\:g\: chloroform\:} .

We know that,

\checkmark\:\bf\purple{\%\:by\:Mass\:(w/W)\:=\:\dfrac{Mass\:of\:solute}{Mass\:of\:solution}\times{100}\:} \\

Where,

  • Mass of Solute = \bf{10^{-5}\:g.}

  • Mass of solution = 1000 g. = 1kg

\implies\:\bf{\%\:by\:Mass\:(w/W)\:=\:\dfrac{10^{-5}}{1}\times{100}\:} \\

\implies\:\bf{\%\:by\:Mass\:(w/W)\:=\:{10^{-5}}\times{100}} \\

\implies\:\bf\red{\%\:by\:Mass\:(w/W)\:=\:{10^{-3}}\%}--(A) \\

Answered by BrainlyGovind
0

option c) 10%(w/w)

hope it helps you

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