Chlorophyll is a green molecule found in plants that absorbs sunlight during photosynthesis and converts it to energy. It's been said to help with blood detoxification, odor control, wound healing, gut health, energy, immune system support and cancer prevention.
I don't understand what is (g).
Maybe the answer is 2H<span>(aq)S</span>₂<span>−2(aq) </span>⇒ <span>H</span>₂<span>S</span>₂.
good information to know ?
Answer:
14.1391 g
Explanation:
The pH of a solution is defined as the negative of the hydrogen ion's concentration.
Thus,
pH = - log [H⁺]
Given that:
pH = 2.85
2.85 = - log [H⁺]
So,
<u>[H⁺] = 0.0014125 M</u>
Also, benzoic acid exists in equilibrium in water as:
C₆H₅COOH ⇄ C₆H₅COO⁻ + H⁺ Ka = 6.3×10⁻⁵
The ICE table is:
C₆H₅COOH ⇄ C₆H₅COO⁻ + H⁺
At t = 0 a 0 0
At t = teq a-x x x
The expression for Ka is:
Ka = 6.3×10⁻⁵ = [C₆H₅COO⁻][H⁺] / [C₆H₅COOH]
Also,
6.3×10⁻⁵ = x.x / (a-x)
x = [H⁺] = 0.0014125 M
6.3×10⁻⁵ = (0.0014125)² / (a-0.0014125)
<u>Solving, a = 0.3308 M</u>
Given volume = 350.0 mL = 350.0×10⁻³ L
So, Moles of benzoic acid = Concentration×Volume
<u>Moles = 0.3308×350.0×10⁻³ = 0.11578 moles</u>
Mass = Molar mass × moles
Molar mass of benzoic acid = 122.12 g/mol
So,
<u>Mass = 122.12 g/mol × 0.11578 moles = 14.1391 g</u>
Answer:
Hydrogen sulfide
Explanation:
A nonoxidizing acid is the acid which cannot act as oxidizing agent and thus furnish hydrogen ions. Example: HCl
Iron(II) sulfide reacts with nonoxidizing acid, say hydrochloric acid to give rotten egg smelling gas, H₂S (Hydrogen sulfide).
The reaction is shown below:
FeS (s) + 2HCl (aq) ⇒ FeCl₂ (s) + H₂S (g)
A general reaction is also shown below of the reaction of Iron(II) sulfide with any nonoxidizing acid, HX as:
FeS (s) + 2HX (aq) ⇒ FeX₂ (s) + H₂S (g)