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
A few parts to choose from: The mitochondria, cell wall, and clorophyll
Answer:
Hydrochloric acid is the excess reactant
Explanation:
I got it right lol
Answer:
Reference frame can be defined as from the perspective of an individual to tell if an object is moving.
Example:
Eienstien used a reference frame in his train thought experiment.
Answer:
16.96 moles of sodium will needed to react with 4.24 moles of oxygen gas.
Explanation:
Moles of oxygen gas = 4.24 moles
According to reaction , 1 mole of oxygen gas reacts with 4 moles of sodium.
Then 4.24 moles of oxygen gas will react with :
of sodium
16.96 moles of sodium will needed to react with 4.24 moles of oxygen gas.