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There are three stereo center So No of stereoisomer $=2^3=8$
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Assertion $(A)$ : Experimental reaction of $CH _{3} Cl$ with aniline and anhydrous $AlCl _{3}$ does not give $o$ and $p-methylaniline$.
Reason $(R)$ : The - $NH _{2}$ group of aniline becomes deactivating because of salt formation with anhydrous $AlCl _{3}$ and hence yields $m$-methyl aniline as the product.
In the light of the above statements, choose the most appropriate answer from the options given below.

$Al_{(S)}+3Ag^+_{(aq)}\,(0.10\, M) \to Al^{+3}_{(aq)}\, (0.30\, M)+3Ag_{(S)}$,
the measured voltage $(E_{cell})$ is $1.50\, volt$. Calculate $E_{cell}^o$ ........... $\mathrm{volt}$
Given : $\frac{{2.303\,RT}}{F} = 0.06\,;\,\log \,3 = 0.48$