Question

What is the percent composition of a sugar solution where 10 grams of sugar is added to 100 grams of water? *

Answer 1

Answer:

Explanation:

percent by mass = mass of solute / mass of solution * 100

                        =  10 / 10 + 100 * 100

                       = 10/110 * 100

                      = 0.0909 * 100

                     = 9.09 %

                             = 10 percent

Answer 2

Given :

➳ Mass of sugar = 10g

➳ Mass of water = 100g

To Find :

➔ Percentage mass by mass composition of the solution.

SoluTion :

➝ Name : Mass percentage

➝ Symbol : %(w/W)

➝ Definition : Amount of solute in grams present in 100g of solution.

➝ Effect of temperature : No effect

➝ Formula :

$\bigstar\:\underline{\boxed{\bf{\%\dfrac{w}{W}=\dfrac{Mass\:of\:solute}{Total\:mass\:of\:solution}\times 100}}}$

➝ Solute : sugar

➝ Solution : sugar + water

$\longrightarrow\sf\:\%\dfrac{w}{W}=\dfrac{10}{10+100}\times 100\\ \\ \longrightarrow\sf\:\%\dfrac{w}{W}=\dfrac{10}{110}\times 100\\ \\ \longrightarrow\sf\:\%\dfrac{w}{W}=0.0909\times 100\\ \\ \longrightarrow\underline{\boxed{\bf{\%\dfrac{w}{W}=9.09\%}}}$

Learn More :

✭ Molarity : Number of moles of solute dissolved one litre of solution.

✭ Molality : Number of moles of solute per 1kg of solvent.

✭ Volume percentage : Volume of solute in mL dissolved in 100mL of the solution.