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They just threw that question at me too. I looked around the provided resources and found:
A molecular model of gas solubility. The solubility of gases, like other solubilities, can increase or decrease with temperature. A simple model can be used to explain why gases can behave either way, depending on the gas and the solvent. The heat absorbed or released when a gas dissolves in liquid has essentially two contributions:
- Energy is absorbed to open a pocket in the solvent. Solvent molecules attract each other. Pulling them apart to make a cavity will require energy, and heat is absorbed in this step for most solvents. Water is a special case- it already contains open holes in its network of loose hydrogen bonds around room temperature. For water, very little heat is required to create pockets that can hold gas molecules.
- Energy is released when a gas molecule is popped into the pocket. Intermolecular attractions between the gas molecule and the surrounding solvent molecules lower its energy, and heat is released. The stronger the attractions are, the more heat is released. Water is capable of forming hydrogen bonds with some gases, while organic solvents often can't. A larger amount of heat is released when a gas molecule is placed in the pocket in water than in organic solvents.
What else can I help you with?
Why do certain solutes dissolved in water release heat and other solutes do not?
When certain solutes dissolve in water, they interact with the water molecules in a way that releases energy in the form of heat. This is often because the solute-water interactions are exothermic, meaning they release energy as they form. Solute molecules that do not have exothermic interactions with water will not release heat upon dissolving.
The low specific heat capacity of air causes it to?
absorb or release small amounts of heat, changing its temperature dramatically.
Does endothermic absorb or release energy?
Both, actually. Heat is released by the system (the object or area you're studying), and is absorbed by the surroundings (everything else, not including the system). Typically people are referring to the effects on the system, so in that case an exothermic reaction is a release of heat.
Do flowers absorb heat?
Flowers do not absorb heat directly as they do not have the metabolic processes to generate heat. However, they can be affected by heat from their surroundings, which can impact their growth and development.
Is a gas absorbing heat or releasing heat?
A gas can either absorb or release heat depending on the situation. When a gas absorbs heat, it can increase in temperature and expand. When a gas releases heat, it can decrease in temperature and contract.
Why do certain solutes dissolved in water release heat and other solutes do not?
When certain solutes dissolve in water, they interact with the water molecules in a way that releases energy in the form of heat. This is often because the solute-water interactions are exothermic, meaning they release energy as they form. Solute molecules that do not have exothermic interactions with water will not release heat upon dissolving.
If you have a solution that is saturated how you dissolve the excess solute?
Heat up the solvent. Solubility of most solid solutes increases with temperatue.
Why do some chemical reactions release heat while others absorb heat?
Chemical reactions release or absorb heat based on whether they release or require energy to break or form bonds between atoms. Reactions that release heat are exothermic, as they release energy, while reactions that absorb heat are endothermic, as they require energy input.
How does heat effect on solutions?
Heat can affect solutions by increasing the rate of dissolution of solutes, increasing the solubility of certain solutes, and changing the viscosity of the solution. Additionally, heat can also cause chemical reactions within the solution to proceed at a faster rate.
Does constituents absorb or release heat upon mixing?
Constituents can absorb or release heat upon mixing, depending on the specific reaction or process involved. For example, an endothermic reaction will absorb heat and cool down the mixture, while an exothermic reaction will release heat and increase the temperature of the mixture.
Is endothermic energy occurring when crystals dissolve in water and the container gets hot?
No.I know that in endothermic reactions things absorb heat or get colder. In exothermic reactions they release heat or get warmer. So, since the container gets hot I guess the energy is exothermic.
What things release heat and absorb heat?
Things that release heat include fire, warm-blooded animals, and some chemical reactions like combustion. Things that absorb heat include ice melting, water evaporating, and endothermic chemical reactions.
When matter changes can it absorb heat energy or release heat energy without a corresponding change in temperature?
no.
How do different surfaces absorb and release heat?
Different surfaces absorb and release heat based on their material composition. Surfaces like asphalt and dark colors absorb more heat due to their high thermal conductivity and low reflectivity, while surfaces like light-colored or metallic materials reflect more heat. The rate at which surfaces release heat depends on their specific heat capacity and thermal conductivity. Heat is released through conduction, convection, and radiation.
Does the Bunsen burner absorb energy as heat?
The Bunsen burner release energy as heat of combustion.
What invention uses cold liquids and absorbs heat?
A refrigerator or air conditioner uses cold liquids (refrigerant) to absorb heat from inside a space and release it outside. The refrigerant evaporates to absorb heat and condenses to release it, allowing the system to cool the space.
The low specific heat capacity of air causes it to?
absorb or release small amounts of heat, changing its temperature dramatically.
