0) According to the follow ing reaction, how many moles of Foot02 can form from
ID: 1025045 • Letter: 0
Question
0) According to the follow ing reaction, how many moles of Foot02 can form from 175.0 mlo 0227 M LIOH solution? Assume that there is excess Feal2 20) FeCl2(aq) . 2 LioHaq) Fe(OH 20) + 2 Lia A) 5,03 - 10-2 moles B) 397 × 10-2 moles C 6.49 10-2 moles 2.52 x 10-2 moles E 1.99 10-2 moles of o.305 M AgNos is required to react exactly with 155.0 mLof 0.274 M Na2504 2 solution? Hint: You will want to write a balanced reaction. A) 345 ml C 173 mL D) 581 mL E 139 mL B) 278 mL 22) Give the somplete ionic equation for the reaction for the reaction Gf any) that occurs when aqueous solutions of 22) K25 and Fe(NO3)2 are mixed Dj K+(ag) + N03-(aq) KNO (s) No reaction occurs. 23) 23) Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of H2504 and KOH are mixed. A) 2 K. (aq) + SO42-(a) K2SO4(s) C) H. (ag)·OH-(aq) + 2 K.(ap + SO42-(a) H2on . 2 K.(a) + SO42-(aq) ED No reaction occurs 24) 24) Give the spectator ions for the reaction that occurs when aqueous solutions of gsOs and HI are mixed A) SO32- and Mg2 B) Mg2+ and I- QH and SO32- D) Ht and I- E No spectator ions are present 25) 25) Identify the combustion reaction. DjCgHy(g) + 5O2(g) 3 cong) + 4H20 E All of the reactions are examples of combustion reactions.Explanation / Answer
Ans 20
Moles of LiOH = molarity x volume
= 0.227 mol/L x 0.175 L
= 0.039725 mol
From the stoichiometry of the reaction
2 moles of LiOH produces = 1 mol of Fe(OH)2
0.039725 mol of LiOH produces = 1*0.039725/2
= 0.0198625 mol of Fe(OH)2
mol of Fe(OH)2 = 1.99 x 10^-2
Option E is the correct answer
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