MCQ
The most basic among these hydroxides, is
- A$Be\,{(OH)_2}$
- B$Mg\,{(OH)_2}$
- C$Ca\,{(OH)_2}$
- ✓$Ba\,{(OH)_2}$
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$2Na(s) + 2HCl(g)\,\, \to \,\,2NaCl(s) + {H_2}(g),$$\Delta H = - 152\,kcal$ For the reaction $Na(s) + \frac{1}{2}C{l_2}(g)\,\, \to \,\,NaCl(s),\,\Delta H = $ .....$kcal$
