Answer:
Equilibrium constant is 0.0873
Explanation:
For the reaction:
A + B ⇄ C
Equilibrium constant is defined as:
K = [C] / [A] [B]
concentrations in equilibrium of each reactant are:
[A] = 10 - X
[B] = 5 - X
[C] = 15 + X
If concentration in equilibrium of B is 9, X is:
[B] = 5 - X = 9 → <em>X = -4 </em>
Replacing:
[A] = 10 - (-4) = 14
[B] = 5 - (-4) = 9
[C] = 15 + (-4) = 11
K = 11 / (14×9) = 0.0873
Thus, <em>equilibrium constant is 0.0873</em>
Explanation:
physical changes : boiling water, freezing water, a pencil being sharpened.
chemical change : rotting cheese, exploding dynamite.
The equation is:
NH₃ + H₂O ↔ NH₄⁺ + OH⁻
base acid conj. acid conj. base
NH₃ is the proton acceptor so it considered as Bronsted-Lowry base and H₂O is proton donor so it considered as Bronsted-Lowry acid
NH₃ when accepted H⁺ it converted into NH₄⁺ (conjugate acid) and H₂O when losing H⁺ it converted into OH⁻ (conjugate base)
The question asks for acid and base
1) OH⁻ base, H₂O acid
2) H₂O acid, OH⁻ base
3) H₂O acid , NH₄⁺ acid
4) OH⁻ base, NH₄⁺ acid
5) NH₃ base, H₂O acid
so the correct answer is 2) because it is the only one containing acid then base
Explanation:
Water is called the "universal solvent" because it is capable of dissolving more substances than any other liquid. This is important to every living thing on earth. It means that wherever water goes, either through the air, the ground, or through our bodies, it takes along valuable chemicals, minerals, and nutrients.
