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What is downward heat flow?

negative heat


What does a negative enthalpy indicate in a chemical reaction?

A negative enthalpy in a chemical reaction indicates that the reaction is exothermic, meaning it releases heat energy to the surroundings.


Is the reaction endothermic or exothermic, and what is the enthalpy of the reaction?

The reaction is exothermic, meaning it releases heat. The enthalpy of the reaction is negative, indicating that it is exothermic.


How is heat included in the equation of an exothermic reaction?

Heat is written as a product of the reaction (apecs answer)


What relates qrxn and qsur?

The relationship between qrxn (heat of reaction) and qsur (heat of surrounding) is described by the first law of thermodynamics, which states that the heat released or absorbed by a reaction is equal and opposite to the heat gained or lost by the surrounding environment. In an exothermic reaction, qrxn is negative and qsur is positive as heat is released to the surroundings. In an endothermic reaction, qrxn is positive and qsur is negative as heat is absorbed from the surroundings.


What does a negative delta H for a reaction suggest?

A negative delta H for a reaction suggests that the reaction is exothermic, meaning it releases heat to its surroundings. This implies that the products of the reaction have lower energy than the reactants.


What can be said about an exothermic reaction with a negative entropy change?

An exothermic reaction with a negative entropy change indicates that the reaction releases heat to its surroundings and results in a decrease in disorder or randomness of the system.


Does hydration of ethylene to form ethanol a type of exothermic reaction?

Yes, the heat of reaction is negative therefore indicating an exothermic reaction


What does a negative deltaH tell about a reaction?

the reaction is exothermic


What equation is used to indicate the exothermic reaction?

An exothermic reaction is typically indicated by a negative sign in front of the enthalpy change (∆H) in the reaction equation. This negative sign signifies that heat is released to the surroundings during the reaction.


What is Q in thermal chemistry?

In thermal chemistry, Q represents the heat exchanged during a chemical reaction or process. It is a measure of the transfer of thermal energy between a system and its surroundings. Q can be positive (heat absorbed) or negative (heat released) depending on the direction of the heat flow.


When heat flow into a system it's value is when heat flows out of a system it's value is negative?

positive < Mitzy >