Q9 / 180 · COMEDK 2013 · Chemistry
In Goldschmidt aluminothermic process, thermite contains
- A$3$ parts of $\mathrm{Al}_{2} \mathrm{O}_{3}$ and $4$ parts of $\mathrm{Al}$
- B$3$ parts of $\mathrm{Fe}_{2} \mathrm{O}_{3}$ and $2$ parts of $\mathrm{Al}$
- Correct answerC$3$ parts of $\mathrm{Fe}_{2} \mathrm{O}_{3}$ and $1$ part of $\mathrm{Al}$
- D$1$ part of $\mathrm{Fe}_{2} \mathrm{O}_{3}$ and $1$ part of $\mathrm{Al}$
Solution
In Goldschmidt aluminothermic process, thermite contains 3 parts of $\mathrm{Fe}_{2} \mathrm{O}_{3}$ and 1 part of aluminium $(\mathrm{Al})$.
$$
\mathrm{Fe}_{2} \mathrm{O}_{3}+2 \mathrm{Al} \longrightarrow \mathrm{Al}_{2} \mathrm{O}_{3}+2 \mathrm{Fe}+\text { Heat }
$$
Hence, the correct answer is option: 'C'.