Select correct statement(s): (I) When excess FeCl3 solution is added to K4[Fe(CN)6] solution, in add β Qualitative and Quantitative Analysis Chemistry Question
Question
Select correct statement(s): (I) When excess FeCl3 solution is added to K4[Fe(CN)6] solution, in addition to FeIII[FeII(CN)6]-, FeII[FeIII(CN)6]- is also formed due to side redox reaction. (II) When FeCl2 is added to K3[Fe(CN)6] solution, in addition to FeII[FeIII(CN)6]-, FeIII[FeII(CN)6]- is also formed due to side redox reaction. (III) FeIII[FeII(CN)6]- is paramagnetic while FeII[FeIII(CN)6]- is diamagnetic. (IV) FeIII[FeII(CN)6]- is diamagnetic while FeII[FeIII(CN)6]- is paramagnetic.
π‘ Solution & Explanation
Step 1: Zinc hydroxide, Zn(OH)2, is an amphoteric hydroxide that reacts with strong acids as well as strong bases. Step 2: When reacted with sodium hydroxide (NaOH), it dissolves to form a soluble salt called sodium zincate: Zn(OH)2 + 2NaOH -> Na2ZnO2 + 2H2O. Step 3: Thus, the compound produced is Na2ZnO2, matching option (a).