what is the concentration of sugar …
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Sia ? 6 years, 6 months ago
Molarty of a solution is given by ,
Molarity (M) = ( Number of moles of the solute ) / ( Volume of solution in Litres )
Molar mass of sugar (C12H22O11) = 12 {tex}\times{/tex}12 + 22 {tex}\times{/tex} 1 {tex}\times{/tex} 11 {tex}\times{/tex} 16 = 342 g mol-1
No. of moles in 20 g of sugar = ( Mass of sugar ) / ( molar mass of sugar ) = {tex}\frac{20 \mathrm{g}}{342 \mathrm{g} \mathrm{mol}^{-1}}{/tex} = 0.0585 moles
Thus,
Molar concentration or Molarity (M) = 0.0585 mol / 2L = 0.02925 mol L-1
2Thank You