Answer:
Kₐ = 1.2 × 10⁻⁷
Explanation:
Step 1. Calculate [H₃O⁺]
2. Calculate Kₐ
HNO₂ + H₂O ⇌ H₃O⁺ + NO₂⁻
I/mol·L⁻¹: 0.025 0 0
C/mol·L⁻¹: 0.025-5.4 × 10⁻⁵ +5.4 × 10⁻⁵ +5.4 × 10⁻⁵
E/mol·L⁻¹: 0.025 5.4 × 10⁻⁵ 5.4 × 10⁻⁵
So, at equilibrium,
[H₃O⁺] = [NO₂⁻] = 5.4 × 10⁻⁵ mol·L⁻¹
[HF] = 0.025 mol·L⁻¹
Kₐ = {[H₃O⁺][NO₂⁻]}/[HNO₂
Kₐ = (5.4 × 10⁻⁵ × 5.4 × 10⁻⁵)/0.025
Kₐ = 2.9 × 10⁻⁹/0.025
Kₐ = 1.2 × 10⁻⁷
The acid is not nitrous acid, because the Kₐ of HNO₂ is 7.2 × 10⁻⁴
Answer: <em>Acceleration of the ball in the given system is 5 meter per Second Square</em>
<em>The laws of motion are used to determine various aspects of an object in motion</em>.
Explanation:
Applying the first law of motion to calculate acceleration; if formula used in first law is given as
Here we have a final velocity as 40 meter per second and initial velocity as 20 meter per second and time span is given as 2 second applying the given values in the given equation and finding the value of a
Answer:
The correct answer is pH relates to relative acid-base ion balance in a solution.
Explanation:
This is because pH is a measure of the concentration of hydrogen ions in a solution. Also the higher the number of Hydrogen ions in a solution, the higher the acidicity and the lower the pH.
A calculator .... that's the answer
Answer: it would be 23820 liters i dont know thats my best answer, hope it helps!
Explanation:
you have to multiply it or divide it.
Hope it helps!! :)