MCQ
Borax is used as cleansing agent because on dissolving in water it gives
- ✓Alkaline solution
- BAcidic solution
- CBleaching solution
- DColloidal solution
$Na_2B_4O_7 + 7H_2O \to 4H_3BO_3 + 2NaOH$
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${C_6}{H_6}\left( \ell \right) + \frac{{15}}{2}{O_2} \to 6C{O_2}\left( g \right) + 3{H_2}O\left( \ell \right)\,\,\,\,\Delta H = - 3271\,kJ$
What is the value of $\Delta U$ for combustion of $1.5\, mol$ benzene at $27\,^oC$ ? .....$kJ$