MCQ
$pH$ of a solution can be expressed as
- A$ - {\log _e}({H^ + })$
- ✓$ - {\log _{10}}({H^ + })$
- C${\log _e}({H^ + })$
- D${\log _{10}}({H^ + })$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

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 ......$kcal\, mol^{-1}$