What does the chemical formula cacl2 show about the compound it represents?
2 answers:
Answer:
The compound represents that calcium chloride is an ionic salt made up of 1 calcium ion and 2 chloride ions.
Explanation:
The given chemical formula is of calcium chloride salt.
The chemical formula represents that 1 atom calcium binds with two atoms of chlorine to form a single molecule of calcium chloride.
It is an ionic salt made up 1 calcium ion and 2 chloride ions.
Calcium has atomic number of 20 and chlorine has atomic number of 17. Calcium will loose 2 electrons to gain noble gas stability whereas chlorine atom will gain 1 electron to gain noble gas stability.
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Combustion can be defined as the reaction of a compound with oxygen. The enthalpy of combustion of octane is for
.
The enthalpy of reaction is the amount of heat energy absorbed or lost by the molecules in the chemical reaction.
The enthalpy of combustion is the amount of heat energy released by the compound in the reaction with oxygen.
The reaction in which heat is liberated with the reaction of a compound with oxygen has an enthalpy of combustion, equivalent to the enthalpy of reaction.
The combustion of octane can be given as:
Thus, the reaction has combustion energy equivalent to the enthalpy of the reaction is . Thus, option B is correct.
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