Some Basic Concepts of Chemistry - Result Question 78
####16. Among the following, the species in which the oxidation number of an element is +6
(2000)
(a) $MnO _4^{-}$
(b) $Cr(CN) _6^{3-}$
(c) $NiF _6^{2-}$
(d) $CrO _2 Cl _2$
Show Answer
Solution:
- Given, initial strength of acetic acid $=0.06 N$
Final strength $=0.042 N$;
Volume $=50 mL$
$\therefore$ Initial millimoles of $CH _3 COOH=0.06 \times 50=3$
Final millimoles of $CH _3 COOH=0.042 \times 50=2.1$
$\therefore$ Millimoles of $CH _3 COOH$ adsorbed $=3-2.1=0.9 mmol$
