Question

Be sure to answer all parts. How many milliliters of a 0.42 M sucrose solution contain each of the following number of grams? The molar mass of sucrose (C12H2011) is 342.3 g/mol a. 0.700 g ml b.4.7 g

Answer 1

. a) Given mass of sucrose = 0.700g Molar mass of sucrose = 342.3 g/mol Number of moles of sucrose = =0.00204 mol Given mass of sucrose = 0.700g C Molar mass of sucrose 342.3 g/mol Molarity of solution = 0.42 M = 0.42 mol (1M=1 mol/L) Molarity of sucrose solution = Number of moles of sucrose (in M=mall) volume of solution (me) 0.42 mol = 0.00204 mol - volume of solution (in L) Volume of solution = 0.00204 mol = 0.00486L - 0.42 mol/L = 0.00486 x 1000 ml (IL=1000 ml) - volume of solition = 4.86 mL Given mass of sucrose - 4.79 Molar mass of sucrose = 342.3 g/mol Number of moles of sucrose = Given mass of sucrose -4.79 .= 0.0137 mol . Molar mass of sucrose 342.3 g/mol Molarity of solution = 0.42M= 0.42 mol/L Molarity of sucrose solution = Number of moles of sucrase 1. volume of solution (in L) 0.42 mol = 0.0137 mol e volume of solution (in 2) . (16=1000 ml) widume of Solution = 0.0137 mol = 0.0326 L = 0.0326 X1000 mL = 3246 mL - 0.42 mol/L volume of solution = 32.6 mL -