Maltose is a disaccharide formed by a condensation reaction between glucose (C₆H₁₂O₆) molecules - VCE - SSCE Chemistry - Question 18 - 2004 - Paper 1

To find the molar mass of maltose (C₁₂H₂₂O₁₁), we need to first note that maltose is composed of two glucose molecules. The molar mass of one glucose molecule is:

$C: 12.01 ext{ g/mol}$ $H: 1.008 ext{ g/mol}$ $O: 16.00 ext{ g/mol}$

Calculating for C₆H₁₂O₆:

$ext{Molar mass of glucose} = (6 imes 12.01) + (12 imes 1.008) + (6 imes 16.00) = 180.18 ext{ g/mol}$

Maltose is formed by the condensation of two glucose units, releasing one water molecule (16.00 g/mol):

$ext{Molar mass of maltose} = (2 imes 180.18) - 18.02 = 342.34 ext{ g/mol}$

Thus, rounding to whole number gives us approximately 342 g/mol.