Chemistry · Chemical equations and stoichiometry
The mass of carbon anode consumed (giving of carbon dioxide) in the production o
The mass of carbon anode consumed (giving of carbon dioxide) in the production of \( 270 \mathrm{kg} \) aluminium metal bum bauxite by Hall process is: (Atomic \( \operatorname{mass} A l=27) \)
- A. \( 180 \mathrm{kg} \)
- B. \( 270 \mathrm{kg} \)
- C. \( 540 \mathrm{kg} \)
- D. \( 90 \mathrm{kg} \)
Step-by-step solution
In the Hall process, the overall reaction is 2Al2O3 + 3C → 4Al + 3CO2. For 4 moles of Al (4×27=108 g), 3 moles of C (3×12=36 g) are consumed. Thus, for 270 kg Al, the mass of carbon required is (36/108)×270 = 90 kg.
Related MCQs
- Volume of in litres, liberated on heating 6.4 g of is:…
- Water gas is an equi-molar mixture of hydrogen and carbon monoxide. If 250 litres of water gas is burnt in air. Assuming both reactants and …
- Complete the following equation: +H_{2} O_{2} \) +(\underline{Y})+O_{2} \) \)…
- +\boldsymbol{2} \boldsymbol{A} \boldsymbol{l}(\boldsymbol{s}) \rightarrow \boldsymbol{2} \boldsymbol{F} \boldsymbol{e}(\boldsymbol{l})+ \) +…
- Give the balanced reaction for the manufacture of the ammonia gas.…