the Molar mass of *235UF6 is 82724.5424 g/mol. i hope this is what you meant and hope it helps
Answer:
To decrease the solubility of the organic product in water.
Explanation:
Methyl benzoate is prepared via <em>Fischer esterification </em>reaction between benzoic acid and methanol in the presence of a mineral acid. The following steps are involved:
- Benzoic acid is dissolved in methanol in a round bottom flask.
- Concentrated sulphuric acid is added and heated under reflux on a steam bath
- Reaction is poured into ice, reaction flask is rinsed with dichloromethane. Layers collected in a test tube.
- Dichloromethane layer is then washed with first sodium carbonate solution(this is done inorder to neutralize and remove the residual benzoic acid) and then with sodium chloride solution(to decrease the solubility of the organic product in water).
- Then Dichloromethane solution is dried over magnesium sulphate.
- Dichloromethane is removed via distillation on a steam bath.
- Collect distillate in a vial on a heating mantle.
The volume of hydrochloric acid, HCl produced from the reaction when 3.7 L of Cl₂ are used is 7.4 L
<h3>Balanced equation </h3>
H₂ + Cl₂ —> 2HCl
Since the reaction occurs at standard temperature and pressure (STP), we can say that:
From the balanced equation above,
1 L of Cl₂ reacted to produce 2 L of HCl
<h3>How to determine the volume of HCl produced </h3>
From the balanced equation above,
1 L of Cl₂ reacted to produce 2 L of HCl
Therefore,
3.7 L of Cl₂ will react to produce = 3.7 × 2 = 7.4 L of HCl
Thus, the volume of HCl produced from the reaction is 7.4 L
Learn more about stoichiometry:
brainly.com/question/14735801
Answer:
a. Phosphoric Acid
b. Acetic Acid
c. Hypochlorous Acid
Explanation:
A buffer works when the pH of this one is in pKa ± 1. That means, to find which buffer system works in some pH you need to find pKa:
pKa = -log Ka
<em>pKa Acetic acid:</em>
-log1.8x10⁻⁵ = 4.74
<em>pKa phosphoric acid:</em>
-log7.5x10⁻³ = 2.12
<em>pKa hypochlorous acid:</em>
-log3.5x10⁻⁸ = 7.46
a. For a pH of 2.8 the best choice is phophoric acid because its effective range is: 1.12 - 3.12 and 2.8 is between these values.
b. pH 4.5. Acetic acid. effective between pH's 3.74 - 5.74
c. pH 7.5. Hypochlorous acid that works between 6.46 and 8.46
<h3><u>Answer;</u></h3>
= 0.6224 M
<h3><u>Explanation</u>;</h3>
Molarity is given by the formula;
Molarity = Number of moles/Volume
But moles = mass/Molar mass
Thus;
Moles = 12.47 g/80.043 g/mol
= 0.1556 Moles
Therefore;
Molarity = 0.1556 moles/0.25
<h3> <u>= 0.6224 M</u></h3>