Find the number of moles of CO2− 3 produced when 0.207 mol of sodium carbonate dissolved. Answer in units of mol.
1 answer:
Answer : The number of moles of carbonate ion, produced are, 0.207 moles.
Explanation : Given,
Moles of sodium carbonate = 0.207 mol
As we know that when sodium carbonate dissolved in water then it dissociates to give 2 sodium ion and 1 carbonate ion.
The balanced chemical reaction will be:
From the balanced chemical reaction we conclude that,
As, 1 mole of sodium carbonate dissociate to give 1 moles of carbonate ion,
So, 0.207 mole of sodium carbonate dissociate to give 0.207 moles of carbonate ion,
Thus, the number of moles of carbonate ion, produced are, 0.207 moles.
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Answer: Option (b) is the correct answer.
Explanation:
A covalent compound is defined as the compound in which sharing of electrons take place between the combining atoms. Generally, when two or more non-metals chemically combine together the it will lead to the formation of a covalent compound.
For example, and HCl is also a covalent compound.
And, a compound in which transfer of electrons occur between the combining atoms is known as an ionic compound. Whenever, a metal chemically combines with a non-metal then it will always lead to the formation of an ionic compound.
For example, KI is an ionic compound.
Thus, we can conclude that and HCl are the two substances which are covalent compounds.
Explanation:
As the total concentration is given as 1.2 mM. And, it is also given that salt present in the solution is NaCl.
As sodium chloride is an ionic compound so, when it is added to water then it will dissociate into sodium and chlorine ions as follows.
So, it means in total there will be formation of 2 ions when one molecules of NaCl dissociates.
Therefore, concentration of chlorine ions will be calculated as follows.
Concentration of ions =
= 0.6 mM
Thus, we can conclude that the concentration of chloride ions is 0.6 mM.