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Question

Al2O3+NaOH+H2O(l)NaAl(OH)4(aq)
Moles of NaOH required to balance equation are :

A
1
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B
2
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C
3
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D
4
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Solution

The correct option is A 2
Al2O3+NaOH+H2ONaAl(OH)4
Firstlyy balancing Al on both sides.
Al2O3+NaOH+H2O2NaAl(OH)4
Now, balancing Na on both sides.
Al2O3+2NaOH+H2O2NaAl(OH)4
Now balancing H and O on the both sides.
Al2O3+2NaOH+3H2O2NaAl(OH)4
Moles of NaOH required to balance the equation =2 Moles.

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