Give the correct order of initials T or F for following statements. Use T if statement is true and F — d and f Block Elements Chemistry Question
Question
Give the correct order of initials T or F for following statements. Use T if statement is true and F if it is false.<br>(I) Sulphide ions reacts with Na2[Fe(CN)5(NO)] to form a purple coloured compound Na4[Fe(CN)5(NOS)]. In the reaction, the oxidation state of iron changes<br>(II) Pt(IV) compounds are relatively more stable than Ni(IV) compounds<br>(III) The welding of magnesium can be done in the atmosphere of Helium<br>(IV) LiAlH4 on hydrolysis will give H2
💡 Solution & Explanation
Step 1: The redox titration is represented by the equation: 2MnO4^- + 5C2O4^2- + 16H+ -> 2Mn2+ + 10CO2 + 8H2O. Step 2: The reaction starts slowly because there are no manganese(II) ions initially present to facilitate the reaction. Step 3: Once Mn2+ ions are generated as products, they catalyze the ongoing reaction. This phenomenon is known as autocatalysis. Thus, option (a) is correct.