Question: A clear solution is heated and forms a precipitate. When cooled it returns to clear. Is it exothermic or endothermic? Endothermic and Exothermic Reactions: Every chemical reaction responds to an input
An overall chemical reaction that breaks bonds and forms new ones can be endothermic (absorbing heat) or exothermic (releasing heat), depending on how much energy is absorbed and produced by the decomposition and synthesis reactions. Some reactions produce heat overall, while others either absorb he...
Answer to: Evaporation is an (endothermic/exothermic) process because when a substance evaporates, it must (absorb/release) energy to (from) its...
Using the bond energy data given below, which choice is closest to the enthalpy change for the combustion of one mole of acetylene, C2H2, to form carbon dioxide and gaseous water? C-H, 456 kJ/mol C=C, Assuming the enthalpy of vaporization is 10 kJ/mol and the...
For a reaction to occur, the system will either release energy through heat or absorb energy in the process. However, in the process, there will still be an energy requirement that is known as the activation energy. This energy is the m...
Ammonium nitrate consists of ionic bonds packed tightly together. When it comes into contact with water, the polar water molecules interfere with those ions and eventually make them disperse. It takes energy to do this, which is absorbed from the surroundings and makes the solution cold. While ...
In this respect, it should be noted that the potential impact of contaminants deriving from the exposure of the IL to air during sliding of IL-lubricated counterparts has been scarcely investigated. This is particularly important in the case of steels, due to the corrosivity of several ILs ...
The amount of energy released when an electron is added to an isolated gaseous atom to produce a monovalent anion is called electron affinity of first electron affinity or electron gain enthalpy. The first electron affinity is given a negative sign as the addition of an electron to a neutral ...
When a bond between two atoms breaks, energy is either absorbed or released depending on the specific bond. If the bond is broken by adding energy, such as heat or light, it is an endothermic process. If the bond is broken by releasing energy, it is ...
B. The liquid loses enough energy to change to a gas. C. The Is the process of liquid water being converted to ice endothermic or exothermic? What happens to the kinetic energy of a molecule when a gas is heated? When a solid dissolves in water, heat may be...