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What is the reaction involved in dissolving sodium carbonate in water an endothermic reaction or exothermic reaction?
Wiki User
∙ 11y ago
Dissolving Sodium Carbonate is an exothermic reaction.
Exothermic reactions give out heat.
When atoms, molecules or ions come together energy is released. The water molecules bond with the sodium carbonate molecules and more energy is released during this reaction than required to create the bonds. More energy means the molecules of the solution move faster and the temperature of the solution increases, thus increasing the temperature of the surroundings.
Hope that helps :)
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∙ 11y ago
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Is the dissolution of calcium hydroxide exothermic or endothermic?
Exothermic: Heat is given off as one of the products. The container holding the reactants and the products gets hot during the reaction. Use approximately 5 mL of 6M HCl and add to a testtube containing a small peice of mossy Zn. Immediately place a thermometer in the testtube and you will see a quick rise in temperature. This rise in temperature indicates that heat is given off which is a clear sign of an exothermic reaction. Hope this helps!!
What is involved in the soil preparation process of liming?
Liming involves spreading agricultural lime, containing calcium carbonate and magnesium carbonate, to soils with undesirably high levels of acidity, thereby increasing their pH levels.
How many elements are in calcium chloride?
The constituent elements of calcium carbonate are calcium, carbon, and oxygen.
What is the inorganic carbon in the carbon cycle?
Well some inorganic carbon species are carbon dioxide, carbonic acid, bicarbonate anion, and carbonate anion. Well we know carbon dioxide is in the carbon cycle. The Calvin cycle in seawater is cooler and produces carbonic acid. Carbonic acid can react with weathered rock(the rock is produced from the Carbonate-Silicate Cycle) to produce bicarbonate ions. These bicarbonate ions eventually are carried to sea. So actually all 4 of these norganic carbons are involved in a carbon cycle.
Why NaCl is very soluble but not CaO is only slightly soluble in water?
Its all to do with enthlapy and entropy. Anything which is soluble usually has a negative standard enthlapy of solution - the energy involved when 1 mole of solute dissolves in a solvent to give an infinately dilute solution. However, NaCl has a slightly positive enthalpy of solution, yet it dissolves. The reason for this is entropy - the change in the amount of disorder. When NaCl dissolves in solution, there is more chaos, more molecules within the solution. Any process that has a large positive entropy change will be favourable - spontaneous and can occur (reaction will 'go'). However, with CaO, the Ca2+ formed in solution has a high affinity (attraction to) for water molecules, hence a lot of water molecules are arranged orderly - less chaos and hence a negative entropy. This should in effect make the compound insoluble, however, the slight solubility is due to it still having a negative enthalpy change of solution - hence despite entropy it is still slightly soluble. (You may be asking how is dissolving CaO possible if entropy is negative? The entropy of the system maybe negative, but the entropy of the surroundings is positive (dissolving gives out heat - exothermic), hence the overall entropy (sum of both entropies) is positive and the reaction will 'go'.
Is a liquid endothermic or exothemic?
A liquid on its own cannot be described as either endothermic or exothermic. The terms endothermic and exothermic are the names of two opposite process reactions. An endothermic reaction absorbs heat and and exothermic reaction gives off heat. A liquid can be involved in either an endothermic reaction or in an exothermic reaction. If you are evaporating a liquid from its liquid phase to its gas phase, then the reaction is usually endothermic and vice versa, going from the gas phase to the liquid phase, the reaction is usually exothermic.
Examples of endothermic and exothermic reactions?
Exothermic reactions give out energy overall. Here are some exothermic reactions:- Combustion of fuels such as hydrogen & methane- Neutralisation of an acid by an alkali- Reaction between sulphur & ironEndothermic reactions take in energy overall. Here are some endothermic reactions:- Reactions involved in cooking- The thermal decomposition of calcium carbonate- Photosynthesis in which plants use sunlight, carbon dioxide & water to make their own food
Is paper burning with a bright flame a exothermic reaction or endothermic reaction?
Reactions with oxygen (air) involved, like burning paper, are exothermic. Exception: formation of many nitrogen-oxygen compounds (NOx) are endothermic.
What is a reaction in which heat is involved?
A reaction in which heat is produced is called exothermic. A reaction in which heat is absorbed (or one that produces cold) is called endothermic.
What are the ways that heat takes part in a chemical changes?
Heat can be involved in a chemical reaction that is endothermic(absorbs heat) or that is exothermic(releases heat)
Why do all transformations of energy have a little bit of heat energy?
In all transformations, either energy is absorbed or released. So the reactions involved are either endothermic or exothermic.
Is paper burning with a bright flame a reaction of exothermic or endothermic?
When a piece of paper burns, the energy stored within the fibers of the paper is released as heat energy. This exergonic reaction produces more energy than it takes to perform.
Is the dissolution of calcium hydroxide exothermic or endothermic?
Exothermic: Heat is given off as one of the products. The container holding the reactants and the products gets hot during the reaction. Use approximately 5 mL of 6M HCl and add to a testtube containing a small peice of mossy Zn. Immediately place a thermometer in the testtube and you will see a quick rise in temperature. This rise in temperature indicates that heat is given off which is a clear sign of an exothermic reaction. Hope this helps!!
What effect does the removal of heat have on the equilibrium position?
The temperature of a reaction will entirely change th equilibrium position for any given reaction. If I'm right, as you increase the temperature, the equilibrium shifts closer to the endothermic reaction as there is more heat to consume. It may also, of course, change other properties of the substances involved in the reaction, but that depends on the chemicals.
How is energy involved in a chemical reaction?
Activation energy is needed to start a chemical reaction. This energy is used to join the reactants together or break them apart. If a reaction is exothermic then it gives energy out. If it is endo thermic then the reaction takes energy in.
When does a mixture become a solution?
I think that this is involved with somehow particles dissolving and creating solutions
When does a mechanical mixture become a solution?
I think that this is involved with somehow particles dissolving and creating solutions
