For the following reaction, how many grams of H2O will be produced if you react 3.7 grams of B2H6? B2H6 + 3 O2 → 2 HBO2 + 2 H2O

Answer 1

Hello, Isabelle,

The balanced equation tells us that we'll get 2 moles water for every 1 mole borohydride. Let's calculate the moles borohydride.

3.7g/27.6g/mole = 0.134 moles borohydride

Multiply by 2 to find moles water: 2*(0.134) = 0.267 moles water, Convert that to grams:

0.267 moles *(18g/mole) = 4.82 grams H₂O.

Bob