21 গ্রাম লোহিত তপ্ত আয়রন এর উপর দিয়ে স্টিম চালনা করা হলে কি পরিমান H2 পাওয়া যাবে?
Answers
Answer:
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 (Fe3O4) and hydrogen.
3Fe
+
4H₂O 4H₂0
Fe3O4
+ 4H₂
(i)
steam
magnetic
oxide
Iron is regenerated by reducing magnetic oxide with water gas (it is mixture of CO and H₂ in 1:1 mole ratio).
(ii) Fe3O4 + 4CO3Fe +
(iii)
Fe3O4
+
4H₂
→3Fe +
3H₂O
(Steam recovere
[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. Fe=56]
if iron is recovered in (ii) an (iii) with 80% efficiency, then how many gram iron is recovered if initially 56 gm iron is taken?