MCQ
Which one of the following compounds has the smallest bond angle?
- A$OH_2$
- ✓$SH_2$
- C$NH_3$
- D$SO_2$
$OH _2=104.5^{\circ}$
$SH _2=92.5^{\circ}$
$NH _3=106.5^{\circ}$
$SO _2=119.5^0$
So, $SH _2$ will have the smallest bond angle.
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$2 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{O}_{2}+4 \mathrm{H}^{\oplus}+4 \mathrm{e}^{-} ; \mathrm{E}_{\mathrm{red}}^{0}=1.23 \mathrm{V}$
$(\mathrm{R}=8.314 \;\mathrm{J} \mathrm{mol}^{-1} \mathrm{K}^{-1} ; \text { Temperature }=298 \;\mathrm{K} ;$ oxygen under std. atm. pressure of $1 \;bar$)
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$E^o (Zn^{+2}, Zn) = -0.76$ $ V$
$E^o (Cu^{+2}, Cu) = +0.34$ $V$
$E^o (Cr^{+2}, Cr) = -0.74$ $V$
$E^o (H^+, 1/2H_2) = -0.00$ $V$