Tungsten is a metal. The symbol of tungsten is W
Tungsten is produced from tungsten oxide by reaction with hydrogen.
The equation for the reaction is:
Woz + 3H2 – W + 3H2O
Calculate the percentage atom economy when tungsten is produced in this reaction.
Use the equation:
184
percentage atom economy =
(M. WO3) + (3 > M H2)
x 100
Relative formula masses (M.): WO3 = 232
H2 = 2
[2 marks]
Percentage atom economy =
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