What is the name of the compound Sr3N2?
1 answer:
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Answer:
15.33
Explanation:
Given parameters:
Mass of KOH = 121g
Volume of solution = 100mL = 0.1dm³
Molar mass of KOH = 56.11g/mol
Unknown:
pH of the solution = ?
Solution:
To find the pH, we must first know the concentration of the solution obtained by mixing KOH up to this volume.
This can be done by finding the molarity of the solution.
Molarity =
Number of moles of KOH = =
= 2.16mole
Input parameters;
Molarity of solution = = 21.6moldm⁻³
KOH → OH⁻ + K⁺
21.6 21.6 21.6
In the solution we have 21.6moldm⁻³ of OH⁻ which is need to find the pH;
pOH = -log₁₀(OH⁻)
pOH = -log₁₀21.6
pOH = -1.33
Since pH + pOH = 14
pH = 14 - (-1.33) = 15.33
In order to understand what is the limiting reactant is useful to convert the masses of reactants into moles. The molecular masses are:
Converting masses into moles:
In the reaction, 2 moles of
are necessary to react with 1 mol of 
. Following this ratio:
We have only 0.5 mol of, i.e, we don't have enough amount of salicylic acid, therefore, this is the limiting reactant.
Converting masses into moles:
In the reaction, 2 moles of
We have only 0.5 mol of
<span>N-methyl 2 pyrrolidone is a cyclic amide and it when heated with aqueous acid gives the product as a cyclic amino acid. The product name is </span><span>N-Methyl-4-aminobutyric acid</span><span>
The reaction is given as follows in the attached picture.
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The reaction is given as follows in the attached picture.
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