Structures of Sulfuric Acid Derivatives
1. Structure of \( \text{H}_2\text{S}_2\text{O}_7 \) (Pyrosulfuric Acid):
No peroxide linkage present.
2. Structure of \( \text{H}_2\text{S}_2\text{O}_8 \) (Peroxydisulfuric Acid):
Contains an \( -\text{O-O}- \) (peroxide) linkage.
3. Structure of \( \text{H}_2\text{S}_2\text{O}_5 \) (Pyro Sulfurous Acid):
No peroxide linkage present.
4. Structure of \( \text{H}_2\text{SO}_5 \) (Peroxomonosulfuric Acid):
Contains an \( -\text{O-O}- \) (peroxide) linkage.
To solve the problem, identify which compound(s) contain a peroxide (–O–O–) linkage.
Analysis of compounds:
Final Answer:
Compounds with peroxide linkage are:
\[
\boxed{\text{H}_2\text{S}_2\text{O}_8 \text{ and } \text{H}_2\text{SO}_5}
\]
Monocyclic compounds $ P, Q, R $ and $ S $ are the major products formed in the reaction sequences given below.
The product having the highest number of unsaturated carbon atom(s) is:
For the reaction sequence given below, the correct statement(s) is(are): 
Consider a reaction $ A + R \rightarrow Product $. The rate of this reaction is measured to be $ k[A][R] $. At the start of the reaction, the concentration of $ R $, $[R]_0$, is 10-times the concentration of $ A $, $[A]_0$. The reaction can be considered to be a pseudo first order reaction with assumption that $ k[R] = k' $ is constant. Due to this assumption, the relative error (in %) in the rate when this reaction is 40% complete, is ____. [$k$ and $k'$ represent corresponding rate constants]
Monocyclic compounds $ P, Q, R $ and $ S $ are the major products formed in the reaction sequences given below.
The product having the highest number of unsaturated carbon atom(s) is:
For the reaction sequence given below, the correct statement(s) is(are): 
Consider a reaction $ A + R \rightarrow Product $. The rate of this reaction is measured to be $ k[A][R] $. At the start of the reaction, the concentration of $ R $, $[R]_0$, is 10-times the concentration of $ A $, $[A]_0$. The reaction can be considered to be a pseudo first order reaction with assumption that $ k[R] = k' $ is constant. Due to this assumption, the relative error (in %) in the rate when this reaction is 40% complete, is ____. [$k$ and $k'$ represent corresponding rate constants]