Hydrogen gas can be produced industrially by the steam reforming of methane.

The equation for the reaction is:

$$C{H}_4+H_{2}O\to CO+3H_2$$

Calculate the percentage atom economy for the production of hydrogen from this reaction.

Give your answer to 3 significant figures.

Use the equation:

$$Percentage\; atom\; economy=\frac{Total\; relative\; formula\; mass\; of\; desired\; product}{Total\; relative\; formula\; mass\; of\; all\; reactants}\times 100$$

Relative atomic masses ($A_r$):

• $C=12$
• $H=1$
• $O=16$