Question

What is the mole fraction of a solute in a solution prepaared with 37.8 g of C6H12O6 dissolved in 482 g of water to make 555 mL of solution? Express your answer in scientific notation.

Answer 1

MOLE FRACTION: mole &vaction is thebf moles af a given component of a miz ture divided by the total numbe of COm noles in the mix ture Where: - total numbev of moles na moles fcomposent a nb moles o component b nc - moles of compo nent c The mole &vaction of compo aent a i moles compo nent a total number of moles. The sum of the mole ractrons for each component in a 5olution is egual to 1. For a solution containiag twa components, solute and Solvent tole Percent is egualto the mole fraclioo for the component multiplied by 100% The sumof the mole percentages for each component the mole percentagesr each component in a solution is equal to 100% . mole % Solute mole % solvent -100%

Calculating Numbeo Moles: . Mole:s is defined as the ya tid of the mass to the molar mass mass (m) Moles (n)? Molar mass (M) . Mass in Sram lor) Kilogvam Molar Hass in gram/mole or) kilosram/mo le 'Mass ỉs defined as the number of moles of the substance multiplied by the molar mass the substance Mass Cm) F moles (n) x Molar Mass (iM) Molar Mass is defined as the ratio of the the substante the mo les o mass (m) mo les (n) mass of the Subs tance to Molav Mass (M)

Solu tion: Calcuate Mole Fraction of tHe solute; Mass of HI2037.8g- Molar Mass of 4 H,2% lgo. 156 g/mol Moles of 45 mo lar maSs 37.9% 0 2098 mo 80.156 /mo Mass of watev 4 82 g Molav Mass of watev 8,023/mo l Moles o watey mass moar maSs 482 g - 26.7481 mo Moles of Solution mles of Solute moles of Selvent 0.2098 mol - 26.74 8 1 mol 26.9579 mol Mole Fraction of moles of Solute Solute Cs H206 moles oSo lutio n 0.007783 26.9รา9nji '. Mole rac tion o C6 H1206 = 0.007783