Select the properly written and balanced equation for the following chemical reaction: Sodium metal and an aqueous solution of m
agnesium iodide react to produce an aqueous solution of sodium iodide and magnesium metal.
Na(s) + MgI (aq) -> NaI (aq) + Mg(s)
Na(s) + MgI2 (aq) -> NaI2 (aq) + Mg (s)
2Na (s) + MgI2 (aq) -> 2NaI (aq) + Mg (s)
2Na (s) + 4MgI (aq) -> 2NaI2 (aq) + 4Mg(s)
Na(s) + MgI (aq) -> NaI (aq) + Mg(s)
Na(s) + MgI2 (aq) -> NaI2 (aq) + Mg (s)
2Na (s) + MgI2 (aq) -> 2NaI (aq) + Mg (s)
2Na (s) + 4MgI (aq) -> 2NaI2 (aq) + 4Mg(s)
1 answer:
Answer:
Explanation: The chemical reaction is written by writing down the chemical formulas of the reactants on the left hand side and the chemical formulas of products on the right hand side separated by a right arrow.
This is a single displacement reaction in which a more reactive element displaces the less reactive element from its salt solution. Thus sodium is more reactive than Mg and thus displaces it from .
The number of atoms of each element must be same on both sides of the reaction so as to follow the law of conservation of mass. Thus the equation is balanced.
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The pH of the diluted HCl solution is 1.3.
Explanation:
Given:
The concentrated HCl solution of 8.0 M. The 1.5 mL of 8.0 M HCl is diluted with water to 250 mL volume.
To find:
The pH of the diluted HCl solution.
Solution
- The concentration of the HCl solution before dilution =
- The volume of the HCl solution taken for dilution =
- The concentration of the HCl solution after dilution =
- The volume of the HCl solution after dilution =
Using the Dilution equation:
The concentration of diluted HCl solution = 0.048 M
In the 1 M solution of HCl, there are 1 M of hydrogen ion, then the concentration of hydrogen ions in 0.048 M of HCl will be:
The pH of the diluted HCl solution :
The pH of the diluted HCl solution is 1.3.
Learn more about the dilution equation here:
Answer:
...1
...2
Explanation:
The ternary constant is given by the following equation:
The symbol XiXi, where XX is an extensive property of a homogeneous mixture and the subscript ii identifies a constituent species of the mixture, denotes the partial molar quantity of species ii defined by
This is the rate at which property X changes with the amount of species i added to the mixture as the temperature, the pressure, and the amounts of all other species are kept constant. A partial molar quantity is an intensive state function. Its value depends on the temperature, pressure, and composition of the mixture.
In a multi phase system (in this case, a ternary system), the components resolved give:
and