A nucleophile is defined as a species that contributes an electron pair to establish a chemical bond during a reaction. The species provided that are capable of acting as nucleophiles are: 1. NH3 (Ammonia) 2. PhSH (Phenyl thiol) 3. \({(H}_3{C}_2{S})_2\) (Dimethyl disulfide) 4. \({OH}^-\) (Hydroxide ion) 5. \({H}_3{O}^+\) (Hydronium ion) 6. \({NCH}_3\) (Methylamine). Consequently, a total of 6 nucleophiles are present.
Given below are two statements:
Statement I: In the oxalic acid vs KMnO$_4$ (in the presence of dil H$_2$SO$_4$) titration the solution needs to be heated initially to 60°C, but no heating is required in Ferrous ammonium sulphate (FAS) vs KMnO$_4$ titration (in the presence of dil H$_2$SO$_4$).
Statement II: In oxalic acid vs KMnO$_4$ titration, the initial formation of MnSO$_4$ takes place at high temperature, which then acts as catalyst for further reaction. In the case of FAS vs KMnO$_4$, heating oxidizes Fe$^{2+}$ into Fe$^{3+}$ by oxygen of air and error may be introduced in the experiment.
In the light of the above statements, choose the correct answer from the options given below: