Respuesta :
Answer:
The unknown compound is Na2CO3(Sodium carbonate).
Explanation:
The chemical compound Na2CO3 is known as Sodium carbonate. It has the value for Molar mass to be 105.9888 g/mol, the Density value to be 2.54 g/cm³ and the Melting point and boiling point values to be 851 °C and 1,600 °C respectively.
The chemical compound that is sodium carbonate is also known as the basic salt.
The chemical compound is also used in water softening and it is this process that causes the changes in pH value.
When added to water, the pH rises that is to say it becomes more basic.
The chemical reaction that is responsible for the increase in pH by this compound is given below;
Step one:
Na2CO3(s) -------> Na2CO3(aq).
Step two:
Na2CO3(aq) -------------------> 2Na^+ + CO3^2-.
Step three:
H2O + CO3^2- ---------> OH^- + HCO3^-.
The unknown compound is Na2CO3(Sodium carbonate).
The chemical reaction that is responsible for the increase in pH is [tex]H_2O + CO3^2- \rightarrow OH^- + HCO3^-.[/tex]
Identification of the unknown compound:
Since the chemical compound Na2CO3 is known as Sodium carbonate. It contains the value for Molar mass to be 105.9888 g/mol, the Density value to be 2.54 g/cm³, and the Melting point and boiling point values to be 851 °C and 1,600 °C respectively.
The chemical compound that is sodium carbonate is also known as the basic salt. It is also used in water softening and it is this process that causes the changes in pH value. When added to water, the pH rises that is to say it becomes more basic.
The chemical reaction that is responsible for the increase in pH should be like
1. [tex]Na_2CO_3(s) \rightarrow Na_2CO_3(aq).[/tex]
2. [tex]Na_2CO_3(aq) \rightarrow 2Na^+ + CO3^2-[/tex]
3. [tex]H_2O + CO3^2- \rightarrow OH^- + HCO3^-.[/tex]
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