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Is the formation of table salt an endothermic or exothermic reaction and why?
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How do you know it is a exothermic reaction?
If you are in a lab and want to tell whether a reaction was exothermic, carefully check the temperature of the reaction vessel. If the reaction was exothermic, the vessel will be warmer than it was before the reaction occurred. If you are looking at a reaction on paper, you will need a table of thermodynamic data. It should contain the molar enthalpies of formation, represented by H, of each of the reactants and products (note: if a reactant or product is an element in its most stable state, like H2(g) or Zn(s), the enthalpy of formation is defined as zero, so they may be left out of the table). Multiply the number of moles of each product and reactant by its molar enthalpy. Add up all the results for the products and subract all the results for the reactants. If your net result is negative, the reaction was exothermic. If it is positive, the reaction was endothermic. Example: CH4(g)+2O2(g)-->CO2(g)+2H2O(g) Delta H (kJ/mol) CH4(g) -74.8 O2(g) 0 CO2(g) -393.5 H2O(g) -241.82 Products: 2(-241.82)+(-393.5)= -877.14 kJ Reactants: -74.8+2(0)= -74.8 kJ Total: -877.14-(-74.8)= -802.34 kJ The reaction was exothermic.
What is the difference between endothermic and exothermic And give examples?
Chemical reactions that release energy in the form of heat, light, or sound are called exothermic reactions. Example: Mixture of sodium and chlorine to yield table salt In other words, combination reactions are exothermic. Reactions that absorb energy or require energy in order to proceed are called endothermic reactions. For example: In the process of photosynthesis, plants use the energy from the sun to convert carbon dioxide and water to glucose and oxygen.
Are Table sugar and table salt are pure substances true or false?
it is not true it is a chemical reaction
Is it true or false table sugar and table salt are pure substance?
Sodium Cloride
What happens if caustic soda is mixed with chlorinated water?
Well, your mixing an acid and a base together, and our expected cocktail(Product) will be neutral. Acid+Alkali->Salt+water NaOH+HCl->NaCl+H2O So, your basically going to end up with table salt(Sodium Chloride) and Water.
Is NaCl an exothermic or endothermic reaction?
Only with very high heat. This compound can melt without decomposition.
How do you know it is a exothermic reaction?
If you are in a lab and want to tell whether a reaction was exothermic, carefully check the temperature of the reaction vessel. If the reaction was exothermic, the vessel will be warmer than it was before the reaction occurred. If you are looking at a reaction on paper, you will need a table of thermodynamic data. It should contain the molar enthalpies of formation, represented by H, of each of the reactants and products (note: if a reactant or product is an element in its most stable state, like H2(g) or Zn(s), the enthalpy of formation is defined as zero, so they may be left out of the table). Multiply the number of moles of each product and reactant by its molar enthalpy. Add up all the results for the products and subract all the results for the reactants. If your net result is negative, the reaction was exothermic. If it is positive, the reaction was endothermic. Example: CH4(g)+2O2(g)-->CO2(g)+2H2O(g) Delta H (kJ/mol) CH4(g) -74.8 O2(g) 0 CO2(g) -393.5 H2O(g) -241.82 Products: 2(-241.82)+(-393.5)= -877.14 kJ Reactants: -74.8+2(0)= -74.8 kJ Total: -877.14-(-74.8)= -802.34 kJ The reaction was exothermic.
What is the difference between endothermic and exothermic And give examples?
Chemical reactions that release energy in the form of heat, light, or sound are called exothermic reactions. Example: Mixture of sodium and chlorine to yield table salt In other words, combination reactions are exothermic. Reactions that absorb energy or require energy in order to proceed are called endothermic reactions. For example: In the process of photosynthesis, plants use the energy from the sun to convert carbon dioxide and water to glucose and oxygen.
What are some example of exothermic reaction?
Exothermic Chemical Reactions · mixing sodium and chlorine to yield table salt · Respiration; combustion of fuels; and neutralization reactions between acids and alkali's
What happens when you mix chlorine and sodium?
An extremely exothermic reaction occurs producing, but it produces 'only' common table salt.
How do you know that a chemical change took place when sodium and clorine join to form table salt?
it is an ionic and exothermic reaction i.e. when it will take place heat will be liberated
An ice cube melts after being left on the table over an extended period of time Exothermic or endothermic?
The process of melting is endothermic because you are adding heat (or energy) to the object. When you add heat or energy to an object it begins to melt , Which tells you the object has reached its melting point or the temperature that the object melts at.
What is the land formation of Table Mountain in Cape Town.?
A sedimentary rock formation
Is formation of table salt a physical or chemical change?
Formation of NaCl from chlorine and sodium is a chemical process.
What football teams play 2 5 3 formation?
The two teams on a table football table!
What is the product side of a science equation if i mix baking soda plus hydrogen chloride?
the product side of a science equation if i mix baking soda plus hydrogen chloride is large quantities of carbon dioxide gas, water and table salt.The reaction is as follows :NaHCO3 + HCL = NaCL + H2O + CO2The reaction is exothermic ie. it gives out heat during the process.
Are Table sugar and table salt are pure substances true or false?
it is not true it is a chemical reaction
