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Large quantities of hydrogen are require...

Large quantities of hydrogen are required these days in industry for various purposes. Water is found to be the industry raw material from which hydrogen can be obtained . One of the important methods for the commerical production of hyrogen in Lane's process in which steam is passes over hot iron. Iron decomposes steam with formation of magnetic oxide `(Fe_(3)O_(4))` and hydrogen.
(i) `{:(3Fe,+,4H_(2)O,rarr,Fe_(3)O_(4),+, 4H_(2)),(,,"steam",,"magnetic ",,),(,,,,"oxide",,):}`
Iron is regenerated by reducing magnetic oxide with water gas (it is mixture of CO and `H_(2)` in 1:1 mole ratio).
`{:((ii),Fe_(3)O_(4),+,4CO,rarr,3Fe ,+,4CO_(2)uarr),((iii),Fe_(3)O_(4),+,4H_(2) ,rarr,3Fe,+,3H_(2)O),(,,,,,,,("Steam recovered")):}`
[equal amount sof magnetic oxide react in steps (ii) and (iii)] Steam so produced is again used in the previous step in which magnitic oxide is produced :
[At . wt. `implies` Fe=56]
How many grams of iron are needed in order to produce 11.35 litre fo `H_(2)` gas at STP?

A

56 gm

B

21 gm

C

42 gm

D

None of these

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • Large quantities of hydrogen are required these days in industry for various purposes. Water is found to be the industry raw material from which hydrogen can be obtained . One of the important methods for the commerical production of hyrogen in Lane's process in which steam is passes over hot iron. Iron decomposes steam with formation of magnetic oxide (Fe_(3)O_(4)) and hydrogen. (i) {:(3Fe,+,4H_(2)O,rarr,Fe_(3)O_(4),+, 4H_(2)),(,,"steam",,"magnetic ",,),(,,,,"oxide",,):} Iron is regenerated by reducing magnetic oxide with water gas (it is mixture of CO and H_(2) in 1:1 mole ratio). {:((ii),Fe_(3)O_(4),+,4CO,rarr,3Fe ,+,4CO_(2)uarr),((iii),Fe_(3)O_(4),+,4H_(2) ,rarr,3Fe,+,3H_(2)O),(,,,,,,,("Steam recovered")):} [equal amount sof magnetic oxide react in steps (ii) and (iii)] Steam so produced is again used in the previous step in which magnitic oxide is produced : [At . wt. implies Fe=56] How many grams of steam is consumed in order to produce 11.35 litres H_(2) gas at STP?

    A
    9 gm
    B
    36 g
    C
    18 gm
    D
    None of these
  • Large quantities of hydrogen are required these days in industry for various purposes. Water is found to be the industry raw material from which hydrogen can be obtained . One of the important methods for the commerical production of hyrogen in Lane's process in which steam is passes over hot iron. Iron decomposes steam with formation of magnetic oxide (Fe_(3)O_(4)) and hydrogen. (i) {:(3Fe,+,4H_(2)O,rarr,Fe_(3)O_(4),+, 4H_(2)),(,,"steam",,"magnetic ",,),(,,,,"oxide",,):} Iron is regenerated by reducing magnetic oxide with water gas (it is mixture of CO and H_(2) in 1:1 mole ratio). {:((ii),Fe_(3)O_(4),+,4CO,rarr,3Fe ,+,4CO_(2)uarr),((iii),Fe_(3)O_(4),+,4H_(2) ,rarr,3Fe,+,3H_(2)O),(,,,,,,,("Steam recovered")):} [equal amount sof magnetic oxide react in steps (ii) and (iii)] Steam so produced is again used in the previous step in which magnitic oxide is produced : [At . wt. implies Fe=56] How many gram water gas is needed in order to recover all the iron in previous problem?

    A
    14 gm
    B
    7.5 gm
    C
    15 gm
    D
    None of these
  • Large quantities of hydrogen are required these days in industry for various purposes. Water is found to be the industry raw material from which hydrogen can be obtained . One of the important methods for the commerical production of hyrogen in Lane's process in which steam is passes over hot iron. Iron decomposes steam with formation of magnetic oxide (Fe_(3)O_(4)) and hydrogen. (i) {:(3Fe,+,4H_(2)O,rarr,Fe_(3)O_(4),+, 4H_(2)),(,,"steam",,"magnetic ",,),(,,,,"oxide",,):} Iron is regenerated by reducing magnetic oxide with water gas (it is mixture of CO and H_(2) in 1:1 mole ratio). {:((ii),Fe_(3)O_(4),+,4CO,rarr,3Fe ,+,4CO_(2)uarr),((iii),Fe_(3)O_(4),+,4H_(2) ,rarr,3Fe,+,3H_(2)O),(,,,,,,,("Steam recovered")):} [equal amount sof magnetic oxide react in steps (ii) and (iii)] Steam so produced is again used in the previous step in which magnitic oxide is produced : [At . wt. implies Fe=56] How many litre H_(2) gas is produced in (i) at STP in the above problem?

    A
    22.7 litre
    B
    30.27 litre
    C
    3.027 litre
    D
    90.8 litre
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