Chemistry - Redox Reactions Question with Solution | TestHub
Match each solution in Column I with the solution(s) in Column II needed for complete reaction.
Column I | Column II |
|---|---|
A) 100 ml of 0.25 M - solution using methyl orange indicator | P) 25 ml of 1.0 M - solution |
B) 100 ml of 0.25 M - solution using phenolphthalein indicator | Q) 50 ml of 0.5 M - solution |
C) 50 ml of 0.5 M - solution using methyl orange indicator | R) 25 ml of 0.5 M - solution |
D) 25 ml of 1.0 M - solution using phenolphthalein indicator | S) 50 ml of 1.0 M - solution |
Options:
Answer:
Solution:
Column II equivalents: P = 0.025 mol = 0.025 eq; Q = 0.025 mol 2 = 0.05 eq; R = 0.0125 mol 2 = 0.025 eq; S = 0.05 mol = 0.05 eq. (A) 0.025 mol with methyl orange is titrated to : 0.05 eq, so Q and S. (B) With phenolphthalein it stops at : 0.025 eq, so P and R. (C) 0.025 mol takes 1 per mole with methyl orange: 0.025 eq, so P and R. (D) 0.025 mol : 0.025 eq, so P and R.
