Answer:
Shield Volcano . I've been their before
Explanation:
Answer:
7.41 × 10⁻⁵
Explanation:
Let's consider the basic dissociation reaction of trimethylamine (CH₃)N).
(CH₃)N + H₂O = (CH₃)NH⁺ + OH⁻
According to Brönsted-Lowry, in this reaction (CH₃)N is a base and (CH₃)NH⁺ is its conjugate acid. The pKb for (CH₃)N is 9.87. We can calculate the pKa of (CH₃)NH⁺ using the following expression.
pKa + pKb = 14
pKa = 14 - pKb = 14 - 9.87 = 4.13
Then, we can calculate the acid dissociation constant for (CH₃)NH⁺ using the following expression.
pKa = -log Ka
Ka = antilog - pKa = antilog -4.13 = 7.41 × 10⁻⁵
The answer is D, do you want me to show you how?
Answer:
H₂O, Na⁺, and SO₄²⁻
Explanation:
NaOH and H₂SO₄ are strong electrolytes. They will ionize completely
.
Molecular equation: 2NaOH + H₂SO₄ ⟶ Na₂SO₄ + 2H₂O
Ionic equation: 2Na⁺ + 2OH⁻ + 2H⁺ + SO₄²⁻ ⟶ 2Na⁺ + SO₄²⁻+ 2H₂O
- The concentration of water is 55.5 mol·L⁻¹.
- The concentration of Na⁺ is twice that of SO₄²⁻ .
- Hydrolysis of SO₄²⁻ is negligible.
The principal components in the flask at the endpoint are H₂O, Na⁺, and SO₄²⁻.
