SATHEE: Some Basic Concepts of Chemistry

Some Basic Concepts of Chemistry - Result Question 21

####21. The volume strength of $1.5 N H_{2} O_{2}$ is

(1990, 1M)

(a) 4.8

(b) 8.4

(c) 3.0

(d) 8.0

Show Answer

Solution:

$1.0 L$ of mixture $X$ contain 0.01 mole of each $[C o {(N H_{3})}_{5} S O_{4}] B r$ and $[C o {(N H_{3})}_{5} B r] S O_{4}$ . Also, with $A g N O_{3}$ , only $[C o {(N H_{3})}_{5} S O_{4}] B r$ reacts to give $A g B r$ precipitate as $[C o {(N H_{3})}_{5} S O_{4}] B r + A g N O_{3} \to [C o {(N H_{3})}_{5} S O_{4}] N O_{3} + A g B r$ $1.0 m o l$ Excess $1.0 m o l$ With $B a C l_{2}$ , only $[C o {(N H_{3})}_{5} B r_{3} S O_{4}$ reacts giving $B a S O_{4}$ precipitate as

Hence, moles of $Y$ and $Z$ are 0.01 each.

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Some Basic Concepts of Chemistry - Result Question 21

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