9. (popmyma nemecrma Xi Fearrow Xarrow Fe(OH)_(3) 4) FeCl_(2) 1) FeO 2) Fe_(2)O_(3) 3) FeCl_(3) 10. PeakritBom Ha HOII Ba^2+ SIBMSICTCA HOH: 3) NO_(3) 4) Br 1) Cl^- 2) SO_(4)^2-

9. The correct answer is 3) $FeCl_{3}$.<br /><br />Explanation:<br />The given chemical equation is $Fe\rightarrow X\rightarrow Fe(OH)_{3}$. To determine the intermediate compound X, we need to consider the possible reactions that can occur between iron (Fe) and water (H2O) to form iron(III) hydroxide (Fe(OH)3).<br /><br />The possible reactions are:<br />1) $Fe + 2H_{2}O \rightarrow Fe(OH)_{2} + H_{2}$<br />2) $Fe(OH)_{2} + \frac{1}{2}O_{2} + H_{2}O \rightarrow Fe(OH)_{3}$<br /><br />From the above reactions, we can see that the intermediate compound X is iron(II) hydroxide (Fe(OH)2). However, the given options do not include Fe(OH)2. Therefore, we need to consider another possible reaction:<br /><br />3) $Fe + 3H_{2}O \rightarrow Fe(OH)_{3} + 3H_{2}$<br /><br />In this reaction, iron (Fe) directly reacts with water (H2O) to form iron(III) hydroxide (Fe(OH)3). Therefore, the intermediate compound X is iron(III) chloride (FeCl3), which is the correct answer.<br /><br />10. The correct answer is 2) $SO_{4}^{2-}$.<br /><br />Explanation:<br />The given chemical equation is $Ba^{2+} + SIBMSICTCA HOH$. To determine the anion present in the compound, we need to consider the possible reactions that can occur between barium ions (Ba2+) and the given options.<br /><br />The possible reactions are:<br />1) $Ba^{2+} + 2Cl^{-} \rightarrow BaCl_{2}$<br />2) $Ba^{2+} + SO_{4}^{2-} \rightarrow BaSO_{4}$<br /><br />From the above reactions, we can see that the anion present in the compound is sulfate ion (SO4^2-), which is the correct answer.