When aluminium oxide `(Al_(2)O_(3))` is electrolysed for the production of aluminium metal. For a given quantity of electricty, the number of moles of

Question

When aluminium oxide `(Al_(2)O_(3))` is electrolysed for the production of aluminium metal. For a given quantity of electricty, the number of moles of

When aluminium oxide `(Al_(2)O_(3))` is electrolysed for the production of aluminium metal. For a given quantity of electricty, the number of moles of aluminium obtained if the volume of `O_(2)` gas obtained is 201.6 litre measured at NTP, is
A. 9
B. 6
C. 12
D. 4.5

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
Number of equivalents of oxygen `= (201.6)/(5.6) = 36`
(Equivalent volume of oxygen `= 5.6` litre at NTP)
`:.` Number of equivalents of `Al = 36`
Mass of aluminium `= 36 xx 9 g`
Number of moles of aluminium `= (36 xx 9)/(27) = 12`

5 views Answered 2023-02-05 15:29