Answer:
hope the inserted image will help :)
Explanation:
Answer:
bcfh
Explanation:
HClO₄ reacts with water thus:
HClO₄ + H₂O → H₃O⁺ + ClO₄⁻
That means HClO₄ produce H₃O⁺ that decreases pH. That means the higher concentration of HClO₄ decreases pH. Thus, lower pH will be:
b) 0.2 M HClO4
The reaction of NaClO₄ is:
NaClO₄ + H₂O → OH⁻ + HClO₄ + Na⁺
The higher concentration of NaClO₄ the higher production of OH⁻ that increase pH, that means the lower concentration of NaClO₄ the lower pH, thus, the answer is:
<em>c) 0.1 M NaClO or</em>
HF reacts with water thus;
HF ⇄ H⁺ + F⁻
The equilibrium constant is:
k = [H⁺] [F⁻] / [HF] = 3,5x10⁻⁴
For HNO₂ equilibrium is:
HNO₂ ⇄ H⁺ + NO₂⁻
k = [H⁺] [NO₂⁻] / [HNO₂] = 4,5x10⁻⁴
As k value is higher for HNO₂, the concentration of H⁺ will be higher in this system doing the HNO₂ with the lower pH.
f) 0.1 M HNO2
NaOH is a strong base that produce OH⁻ that increase pH, pure water is neutral, thus, the lowe pH is:
h) pure water
I hope it helps!
1. <span>Substances in a </span>mixture<span> can be separated using different </span>methods, for example <span>distillation (separation of two liquids).
2. </span>Mass<span> is the amount of matter an object contains.
</span>Volume is t<span>he amount of space occupied by a three-dimensional object.
3. d(wallet) = 15g</span>÷5cm³ = 3g/cm³.
4. Weight of an astronaut also increases. W=m·g.
Euglena belongs to the Kingdom Protista. It is a genus of single-celled flagellates. Euglena are the best known organisms in the Euglenophyta Phylum.Euglena belongs to the Kingdom Protista.<span> It is a genus of single-celled flagellates. Euglena are the best known organisms in the Euglenophyta Phylum.</span>
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