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How does endothermic reactions affect room temperature?
Endothermic reactions absorb heat from their surroundings, resulting in a decrease in temperature in the room where the reaction takes place. This can make the room feel cooler as the reaction uses up the heat energy present in the environment.
What are the reaction condition (temperature and pressure) for ammonium chloride and calcium hydroxide It's endothermic reaction can we use steam as a heat source?
The reaction between ammonium chloride and calcium hydroxide is endothermic and typically occurs at room temperature and atmospheric pressure. While steam could theoretically provide heat to drive the reaction, it may not be practical, as the reaction absorbs heat from its surroundings. Instead, applying gentle heat directly to the reactants may be more effective in facilitating the reaction.
Which o the following would most likely be spontaneous?
To determine which process would be most likely spontaneous, we typically consider factors like changes in enthalpy and entropy. A process that results in a decrease in enthalpy (exothermic) and an increase in entropy (disorder) is generally spontaneous. For example, the melting of ice at room temperature is spontaneous because it absorbs heat (endothermic) but results in a significant increase in entropy. Without specific options provided, it's essential to assess these thermodynamic principles to identify spontaneous processes.
Why melting ice is considered an endothermic reaction?
False.The original answer (now deleted ) said that the melting of ice is an endothermic reaction.If you need to convince yourself of this, take half a glass of water at room temperature. Put in a thermometer, wait a while, then record the temperature.Now add a few ice cubes; wait a while, then check the temperature again. If the melting of ice were an exothermic process, the water would then be warmer. Since you will actually find the water to be cooler, it is an endothermic process.
Why does methanol show an exothermic reaction with water at room temperature while it gives an endothermic reaction with water in cold conditions?
Methanol can form hydrogen bonds with water molecules, leading to an exothermic reaction due to the release of energy when the bonds are formed. In colder conditions, the stronger hydrogen bonds between water molecules dominate, requiring energy to break these bonds to accommodate methanol molecules, resulting in an endothermic reaction.
The synthesis of carbon disulfide is spontaneous and exothermic at room temperature what must be true regarding this reaction?
The reverse reaction is endothermic and nonspontaneous.
The synthesis of decomposition of nitrogen dioxide is endothermic and nonspontaneous at room temperature what must be true regarding this reaction?
For the reaction to occur at room temperature, an external energy source must be provided to drive the reaction, and the reaction will absorb heat from the surroundings. The reaction is non-spontaneous because it does not occur naturally without intervention.
How does endothermic reactions affect room temperature?
Endothermic reactions absorb heat from their surroundings, resulting in a decrease in temperature in the room where the reaction takes place. This can make the room feel cooler as the reaction uses up the heat energy present in the environment.
What is a non-example of an exothermic reaction?
Any endothermic reaction, for instance photosynthesis.
Which direction of the reaction equilibrium is favored at 298 K room temperature use the reaction I2 solid to I2 gas when H 62.4 kJmol and S 0.145 kJmolK?
I2(s) --> I2(g); dH=62.4kJ/mol; dS=0.145kJ/mol. The reaction will favor the product at this temperature. Your entropy is positive and your enthalpy is also positive, so this reaction will not be spontaneous at all temperatures. But at room temperature, which is 298K, it will be spontaneous and proceed left to right. (this is the sublimation of iodine)
The precipitation of potassium chloride is nonspontaneous and exothermic at room temperature what must be true regarding this process?
For the precipitation of potassium chloride to occur at room temperature, energy must be supplied to the system to overcome the nonspontaneous nature of the process. This energy input can come in the form of heat to compensate for the exothermic nature of the reaction. Additionally, the reaction may be driven forward by manipulating the concentration of reactants or by using a catalyst.
Does electrolysis occur at the room temperature?
Electrolysis typically occurs at room temperature, as it is a process that involves the use of an electric current to drive a non-spontaneous chemical reaction. However, the rate of electrolysis may be influenced by temperature, as higher temperatures can increase reaction rates.
Does gas undergo an exothermic or endothermic reaction?
too many variables. your question is vague. what is the composition of the gas? what is/are the compositions room temperature states? what are the reactants within this reaction? please refine your questions and ask again
Is ice melting a spontaneous reaction?
Before we go into the details of whether melting of ice at a room temperature of 25 degree Celsius is spontaneous reaction or not, we first define the spontaneous and non-spontaneous reactions. Spontaneous Reaction, as you know, is a reaction that takes place on its own without an external force or other reaction to drive it e.g. rusting or iron nail, burning of wood etc. Non-Spontaneous Reaction is a reaction which cannot occur without the input of work from an external source. Such as charging of battery, as the electrons flow is required to charge it completely. Now replying to your question: First of all I think, though I am not sure, that heat doesn't transfer from ice to the room. Actually, heat transfers from room to the ice and that's how ice is caused to turn into liquid. The ice needs heat from the surrounding to have its molecules to jiggle (vibrate) and this shaking of ice molecules changes it into liquid. Remember, this reaction is physical, not chemical. From all I have studied and I know, I truly believe that the conversion of ice into liquid form is spontaneous reaction.
Why melting ice is considered an endothermic reaction?
False.The original answer (now deleted ) said that the melting of ice is an endothermic reaction.If you need to convince yourself of this, take half a glass of water at room temperature. Put in a thermometer, wait a while, then record the temperature.Now add a few ice cubes; wait a while, then check the temperature again. If the melting of ice were an exothermic process, the water would then be warmer. Since you will actually find the water to be cooler, it is an endothermic process.
Why does methanol show an exothermic reaction with water at room temperature while it gives an endothermic reaction with water in cold conditions?
Methanol can form hydrogen bonds with water molecules, leading to an exothermic reaction due to the release of energy when the bonds are formed. In colder conditions, the stronger hydrogen bonds between water molecules dominate, requiring energy to break these bonds to accommodate methanol molecules, resulting in an endothermic reaction.
The burning of charcoal is a spontaneous process yet heat must first be applied to start a charcoal why?
Burning charcoal is spontaneous, but not at room temperature. To start the combustion energy must be added (in the form of heat). Once the temperature of the charcoal reaches a certain temperature it reacts exothermically and releases heat. This heat of reaction is sufficient to locally heat more charcoal so that it burns continuously.
