At standard pressure, hydrogen peroxide, h2o2, melts at -0.4°c. boils at 151°c, and is very soluble in water. a bottle of aqueous hydrogen peroxide, h2o(aq), purchased from a pharmacy has a pressure-releasing cap. aqueous hydrogen peroxide decomposes at room temperature, as represented by the balanced equation below.
2h2o2(aq)==> 2h2o(l) + o2(g) + 196.0 kj
state. in terms of both melting point and boiling point, why h2o2 is a liquid at room temperature.
state evidence that indicates the decomposition of h2o2(aq) is exothermic.
explain why a hydrogen peroxide bottle needs a pressure-releasing cap.