Not always. In a chemical reaction, the process can be either endothermic or exothermic. Endothermic reactions absorb heat from the surroundings, while exothermic reactions release heat into the surroundings. The specific reaction will determine whether it is endothermic or exothermic.
Yes, this affirmation is true.
An endothermic reaction absorbs heat from its surroundings, while an exothermic reaction releases heat to its surroundings. The general formula for an endothermic reaction is: reactants + heat β products, and for an exothermic reaction: reactants β products + heat.
You can predict if a reaction will be exothermic or endothermic by comparing the energy of the products and reactants. If the products have lower energy than the reactants, the reaction will be exothermic (energy released). Conversely, if the products have higher energy than the reactants, the reaction will be endothermic (energy absorbed).
Yes, between reactive chemicals there is likely to be a reaction which will lead to precipitation if all the reactants and possible products are aqueous. The reactants, although aqueous, could fail to react if they are endothermic.
This question is oddly worded, but I am assuming that the author means to ask "in chemical equations for endothermic reactions, is the change in energy (delta H) positive or negative?". For endothermic reactions, heat is absorbed during the reaction, so the energy of the products is higher than the energy of the reactants. Since dH = H(products) - H(reactants). Therefore, dH is positive.
Yes, endothermic reactions absorb heat from their surroundings, causing the products to have higher energy than the reactants. This results in an overall increase in the energy of the system.
In an endothermic reaction, the products have higher energy than the reactants. This means the reactants have lower energy compared to the products.
Hf, products > hf, reactants
The products are favored over the reactants if the reaction is exothermic, releasing energy. Conversely, the reactants are favored over the products if the reaction is endothermic, requiring energy input.
Yes, this affirmation is true.
In an endothermic reaction, the products are generally less stable than the reactants. This is because the reaction absorbs heat from the surroundings to proceed, indicating that the products have higher potential energy than the reactants.
An endothermic reaction absorbs heat from its surroundings, while an exothermic reaction releases heat to its surroundings. The general formula for an endothermic reaction is: reactants + heat β products, and for an exothermic reaction: reactants β products + heat.
You can predict if a reaction will be exothermic or endothermic by comparing the energy of the products and reactants. If the products have lower energy than the reactants, the reaction will be exothermic (energy released). Conversely, if the products have higher energy than the reactants, the reaction will be endothermic (energy absorbed).
Endothermic reactions absorb heat from their surroundings, resulting in a decrease in temperature, while exothermic reactions release heat to their surroundings, causing an increase in temperature. In endothermic reactions, the products have more energy than the reactants, whereas in exothermic reactions, the products have less energy than the reactants.
Yes, between reactive chemicals there is likely to be a reaction which will lead to precipitation if all the reactants and possible products are aqueous. The reactants, although aqueous, could fail to react if they are endothermic.
Endothermic reactions draw heat from the reactants / products and the environment, so they tend to get cooler as the reaction proceeds. Exothermic reactions release heat to the reactants / products and the environment, so they tend to get hotter as the reaction proceeds.
In a reaction, the bonds in reactants are broken down (endothermic) and new bonds formed. The new bonds formed (exothermic) will result in the formation of the products.