Question

125. 1 kg of wood contains 15% moisture and 5% hydrogen by weight. How much water is evaporated during complete combustion of 1kg of wood?

Answer 1

Answer:

One Kg of Wood contains 20 % of Moisture and 5% of Hydrogen by weight so how much water is evaporated during ...

Answer 2

Answer:

175 gm. of water is evaporated during complete combustion of 1kg of wood if 1 kg of wood contains 15% moisture and 5% hydrogen by weight.

Explanation:

• There are two sources of water generation in the combustion process of wood.

           1) Trapped moisture in the wood.

          2) Trapped hydrogen in the wood which reacts with the

              atmospheric  oxygen and form water.

• Now, the total amount of trapped moisture in wood is

       = (1000 × 15/100)g = 150 g.

• The total amount of hydrogen generated water is = ( 1000× 2.5/100) = 25 g. (As , in a single molecule of water there are two atoms of hydrogen, so total amount of hydrogen will be in it's half amount of water).

• Total amount of evaporated water is :

        total amount of trapped moisture + total amount of hydrogen

       generated water  = (150+25) g = 175 g.