Question

How much sucrose do you need to make 50 ml of a 10% solution? Sucrose is a solid with a molecular weight of 342.3. Show your calculations, and give complete instructions.

Answer 1

107. surose goluhon means 10 gm surose in 100 ML ie 10g/100m or 100g/hare I mol of sucrose = 342.3g . mol as Surose in 100g = 100g = 0.29amol 342.39/mol ie o.292 mol in Ih soluhon. Molarity = 0.292M. We need to make 50 ml of solution. 1 st find moles ces sucrose need Molarity = no. cf moles hitre ces solchon no. cef molus ces suerose = molarity xhirre assoluto = 0.292 mořx 0.05 h = 0.0146 mol .. gm of sumose need = moles of sucrosexmolarmas = 0.0146 molx 342. 390/mol = 4.99 gm suerose