MCQ
Bayer’s reagent used to detect olifinic double bond is
- Aacidified $KMnO_4$
- Baqueous $KMnO_4$
- ✓$1\%$ alkaline $KMnO_4$ solution
- D$KMnO_4$ in benzene
$S$ it's $1\,\%$ alkaline $KMnO _4$ solution
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Given $SO_3(g) + H_2O(l) \rightarrow H_2SO_4(l)$
$\Delta H = -130\,\, kcal\, mol^{-1}$
$SO_2(g) + 1/2O_2(g) \rightarrow SO_3(g)$
$\Delta H = -100 \,\,kcal\,\, mol^{-1}$
the enthalpy of formation of $H_2SO_4(l)$ would be ......$kcal\, mol^{-1}$