Question
write the classification of amino acids and give examples of each.

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self

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What is the difference between osmosis and diffusion?
With the help of an example explain what is meant by pseudo first order reaction.
a. Amongst the following, the most stable complex is:
i. $\left[ Fe \left( H _2 O \right)_6\right]^{3+}$
ii. $\left[ Fe \left( NH _3\right)_6\right]^{3+}$
iii. $\left[ Fe \left( C _2 O _4\right)_3\right]^{3-}$
iv. $\left[ FeCl _6\right]^{3+}$
b. What will be the correct order for the wavelength of absorption in the visible region for the following:
$
\left[Ni\left(NO_2\right)_6\right]^{4-},\left[Ni\left(NH_3\right)_6\right]^{2+},\left[Ni\left(H_2 O\right)_6\right]^{2+}
$
Why the reactivity of chlorobenzene towards nucleophilic substitution increase when electron withdrawing group ( $- NO _2$ ) is attached to the ortho and para positions? Explain.
During nuclear explosion, one of the products is 90Sr with half-life of 28.1 years. If $1 \mu g$ of 90Sr was absorbed in the bones of a newly born baby instead of calcium, how much of it will remain after 10 years and 60 years if it is not lost metabolically.
The decomposition of a hydrocarbon follows the equation. $\text{k}=(4.5\times10^{11}\text{s}^{-1})\text{e}^{-28000}\text{ K/T}$
Calculate $Ea.$
Match the property given in Column $I$ with the element given in Column $II.$
 
Column $I ($Property$)$
 
Column $II ($Element$)$
$(i)$
Lanthanoid which shows $+4$ oxidation state
$(a)$ $Pm$
$(ii)$
Lanthanoid which can show $+2$ oxidation state
$(b)$ $Ce$
$(iii)$
Radioactive lanthanoid
$(c)$ $Lu$
$(iv)$
Lanthanoid which has $4f^7$ electronic configuration in $+3$ oxidation state
$(d)$ $Eu$
$(v)$
 Lanthanoid which has $4f^{14}$ electronic configuration in $+3$ oxidation state
$(e)$ $Gd$
 
 
$(f)$ $Dy$
For an elementary reaction$:$
$2A + B \rightarrow 3C$
the rate of appearance of $C$ at time $'t\ ’$ is $1.3 \times 10-^4 \ce{mol L-^1 s-^1.}$ Calculate at this time$:$
  1. Rate of the reaction.
  2. Rate of disappearance of $A.$
(i) Define the order of a reaction.
(ii) Explain the effect of concentration of reactant on the rate constant.
(iii) For a first order reaction, if the rate constant at 500 K and 600 K are $0.03 s^{-1}$ and $0.06 s^{-1}$ respectively, then calculate the activation energy.
$
\left[R=8.314 JK^{-1} mol^{-1}, \log 2=0.3010\right]
$
Answer the following questions:
Draw the structures of chromate and dichromate ions.