# The molecular formula for glucose is C6H12O6. What would the molecular formula for a molecule made by linking three glucose molecules together by dehydration reactions be?

Nov 28, 2015

${C}_{18} {H}_{32} {O}_{16}$

#### Explanation:

since this is a dehydration reaction, it means that when two molecules are linked together, there will be one molecule of water ${H}_{2} O$ removed.

Therefore, the molecular formula will be ${C}_{18} {H}_{32} {O}_{16}$.

The reaction will be:
${C}_{6} {H}_{11} {O}_{5} - {\underbrace{O H + H}}_{\textcolor{b l u e}{{H}_{2} O}} - {C}_{6} {H}_{10} {O}_{5} - {\underbrace{O H + H}}_{\textcolor{b l u e}{{H}_{2} O}} - {C}_{6} {H}_{11} {O}_{6} \to {C}_{18} {H}_{32} {O}_{16} + \textcolor{b l u e}{2 {H}_{2} O}$