Exothermic processes - Page 3
Questions
- When a hydrocarbon is combusted, clearly we break #C-H# and #C-C# bonds. Why are such reactions exothermic?
- What are exothermic reactions used for?
- When two chemicals mix causing their temperature to rise. Is this an exothermic or endothermic reaction?
- Why is burning wood exothermic? I thought the wood is taking in heat to burn, therefore endothermic. However, it then gives off heat which makes it exothermic. Which is it?
- For #"barium carbonate"#, #"barium oxide"#, #"magnesium oxide"#, and #"magnesium chloride"#, which salt is likely to exhibit the greatest lattice enthalpy?
- Is a reaction that is endothermic and becomes less positionally random spontaneous or non spontaneous? What about more positionally random? Is there enough information to tell?
- Why is respiration an exothermic process?
- What happens to the energy released by an exothermic reaction?
- What type of process occurred when salt A dissolved in water?
- In an experiment, Ann mixes concentrated sulfuric acid with water in a reaction test tube. The walls of the test tube turn hot. What type of reaction has occurred?
- Why is energy lost a negative number?
- What reactions that release energy?
- What is the temperature that oxidize Zinc into Zinc oxide?????
- Why is respiration considered as an exothermic reaction?
- Why is pressure always negative in the formula #w = -P DeltaV#?
- Given appropriate data, what energy is released by the combustion of #3080*g# of #"nitromethane"#?
- Why is magnesium oxide commonly used as a material for fire-bricks, furnace lining, and crucibles?
- For the incomplete combustion reaction #"C"_6"H"_6(l) + 3/2"O"_2(g) -> 6"C"(s) + 3"H"_2"O"(l)#, answer these questions about enthalpy?
- Why is hydrogen peroxide stored in cold temperatures?
- How much heat (kJ) is released when 50 g of ethanol is reacted with excess oxygen?