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NaBr , used to produce AgBr for use in p...

NaBr , used to produce AgBr for use in photography can be self prepared as follows:
`Fe+Br_(2) to FeBr_(2) " "…(i) `
`FeBr_(2) + Br_(2) to Fe_(3) Br_(8)" "…(ii) `(not balanced)
`Fe_(3)Br_(8) + Na_(2)CO_(3) to NaBr+CO_(2) + Fe_(3)O_(4)" "...(iii)" "` (not balanced)
(At mass: Fe=56, Br=80)
Mass of iron required to produce `2.06xx10^(3)` kg NaBr

A

420 gm

B

420 kg

C

`4.2 xx 10^(5)` kg

D

`4.2 xx 10^(8)` gm

Text Solution

Verified by Experts

The correct Answer is:
B
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