Answer:
A. False
B. True
C. False
Explanation:
- A. After the excess sucrose has crystallized out, the remaining solution is not saturated.
This is false, once the excess sucrose has crystallized out, the remaining solution is saturated. There's as much sucrose as can be in that amount of water at that temperature.
- B. After the excess sucrose has crystallized out, the system is now stable and is in equilibrium.
This is true, it is stable because it will not change by itself, it is in equilibrium because the rate of sucrose molecules leaving the surface of the crystals to be hydrated by water is equal to the rate of sucrose molecules in water attaching to the surface of the crystals.
- C. Is false because the system is in equilibrium, so the two rates are equal.
Answer:
Explanation: A yellow precipitate o lead iodide is formed. see equation of reaction below: →
Th PbI2 is the insoluble yellow precipitate
Covalent, as Isopentene (2 methylbutane) is completely non-metallic
The equation of the proton transfer is:
- NaC₆H₅CO₂ + H₂O ⇄ C₆H₅CO₂H + NaOH
<h3>What are acids?</h3>
Acids according to the Bronsted-Lowry definition, are substances that donates one or more hydrogen ions to another substance in a chemical reaction.
The substances that receive the proton are called bases.
Hydrogen ions are considered as protons. The hydrogen ions produced by acids results in a pH of less than 7 for acid solutions.
Considering the given substances, the equation of the proton transfer is given below:
NaC₆H₅CO₂ + H₂O ⇄ C₆H₅CO₂H + NaOH
The compound NaC₆H₅CO₂, sodium benzoate, is a base and accepts protons from H₂O which serves as the acid.
H₂O serve as the acid by transferring protons to NaC₆H₅CO₂ and then, NaOH is formed.
Learn more about protons at: brainly.com/question/24084759
#SPJ1