JEE Advanced · Chemistry · 13. GOC

Consider the following reaction.

On estimation of bromine in $1.00 g$ of $R$ using Carius method, the amount of $AgBr$ formed (in $g$ ) is____[Given: Atomic mass of $\text H =1,\text C =12,\text O =16,\text P =31,\text {Br}$ $=80,\text{Ag} =108]$

A 1.5
B 4.55
C 13.8
D 12.3

Verified Solution

Answer & Solution

Correct Answer

(A) 1.5

Step-by-step Solution

Detailed explanation

2 P + 3 {Br}_{2} \to 2 {PBr}_{3}

Number of moles in

1 gm

(R) = \frac{1}{250}

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match the complexes in Column I with their properties listed in Column II. Indicate your answer by darkening the appropriate bubbles of the $4 \times 4$ matrix given in the ORS.

Column I	Column II
A. $\text O _2^{-} \longrightarrow \text{O} _2$ $+~\text O _2^{2-}$	P. Redox reaction
B. $\text{CrO} _4^{2-}+\text H ^{+} \longrightarrow$	Q. One of the products has trigonal planar structure
C. $\text{MnO} _4^{-}+ \text{NO} _2^{-}$ $+~ \text H ^{+} \longrightarrow$	R. Dimeric bridged tetrahedral metal ion
D. $\text{NO} _3^{-}+ \text H _2 \text{SO} _4$ $+~ \text{Fe} ^{2+} \longrightarrow$	S. Disproportionation

JEE Advanced 2007 Hard

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Consider the following reaction.

On estimation of bromine in $1.00 g$ of $R$ using Carius method, the amount of $AgBr$ formed (in $g$ ) is____[Given: Atomic mass of \(\text H =1,\text C =12,\text O =16,\text P =31,\text {Br}\) \(=80,\text{Ag} =108]\)

Answer & Solution

Step-by-step Solution

See the Complete Solution

Column I	Column II
A. \(\text O _2^{-} \longrightarrow \text{O} _2\) \(+~\text O _2^{2-}\)	P. Redox reaction
B. \(\text{CrO} _4^{2-}+\text H ^{+} \longrightarrow\)	Q. One of the products has trigonal planar structure
C. \(\text{MnO} _4^{-}+ \text{NO} _2^{-}\) \(+~ \text H ^{+} \longrightarrow\)	R. Dimeric bridged tetrahedral metal ion
D. \(\text{NO} _3^{-}+ \text H _2 \text{SO} _4\) \(+~ \text{Fe} ^{2+} \longrightarrow\)	S. Disproportionation

Consider the following reaction.On estimation of bromine in 1.00 g of R using Carius method, the amount of AgBr formed (in g) is____[Given: Atomic mass of \(\text H =1,\text C =12,\text O =16,\text P =31,\text {Br}\) \(=80,\text{Ag} =108]\)

Step-by-step Solution

Consider the following reaction.

On estimation of bromine in $1.00 g$ of $R$ using Carius method, the amount of $AgBr$ formed (in $g$ ) is____[Given: Atomic mass of \(\text H =1,\text C =12,\text O =16,\text P =31,\text {Br}\) \(=80,\text{Ag} =108]\)