Tungsten can be extracted from tungsten oxide, WO3\text{WO}_3WO3, by reaction with hydrogen.
120 tonnes of tungsten oxide was heated with hydrogen. The tungsten formed in the reaction was separated and purified. The mass of tungsten was then determined.
The results are shown in Table 1.
| Mass in tonnes | |
|---|---|
| Mass of tungsten oxide | 120.00 |
| Mass of tungsten produced | 61.30 |
| Theoretical mass of tungsten formed | 84.50 |
Use the information in Table 1 to calculate the percentage yield of tungsten in this process.
percentage yield=actual yieldtheoretical yield×100 \text{percentage yield} = \frac{\text{actual yield}}{\text{theoretical yield}} \times 100 percentage yield=theoretical yieldactual yield×100Give your answer to 1 decimal place.
