MCQ
The $pH$ of blood is
- A$5.2$
- B$6.3$
- ✓$7.4$
- D$8.5$
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[Given : Molal boiling point elevation constant of water $\left(\mathrm{K}_{\mathrm{b}}\right)=0.52 \mathrm{K.} \mathrm{kg} \mathrm{mol}^{-1}$,
$1 \mathrm{~atm}$ pressure $=760 \mathrm{~mm}$ of $\mathrm{Hg}$, molar mass of water $\left.=18 \mathrm{~g} \mathrm{~mol}^{-1}\right\rfloor$
$CH_3-CH=CH-CH_2-OH$ $\xrightarrow[{{S}_{{{N}^{1}}}}]{HBr}$ $[P]$
In the given reaction the product $[P]$ is :
$(I)$ $NO + Br_2 \rightleftharpoons NOBr_2 $ ........ Fast
$(II)$ $NOBr_2 + NO \rightarrow 2NOBr$ ......... Slow
The overall order of this reaction is