Answer:
Explanation:
We must use the Nernst equation
Step 1. Calculate E°
SO₄²⁻(aq) + 4H⁺(aq) + 2e⁻ ⇌ SO₂(g) + 2H₂O(ℓ)
<u>2Br⁻⇌ Br₂(aq) + 2e⁻ </u>
SO₄²⁻(aq) + 4H⁺(aq) + 2Br⁻(aq) ⇌ Br₂(aq) + SO₂(g) + 2H₂O(ℓ)
E° = 0.17 - 1.0873 = -0.92 V
Step 2. Calculate Q
E = 0 V
E° = -0.92 V
R = 8.314 J·K⁻¹mol⁻¹
T = 66 °C
n = 2
F = 96 485 C/mol
Calculations:
T = 66.0 + 273.15 = 339.15 K
<h2>Total distance divided by total elapsed time gives : Average speed </h2>
Explanation:
Speed
It is the distance traveled by body with respect to time .
Its formula is Speed = distance /time
V=S/T
units : m/sec or Km/hr
Distance
It is total path traveled by body in any direction .
It unit and symbol is : S and unit = m /Km
Average speed
It is the total distance traveled by body with respect to total time taken to travel that given distance .
Average speed = total distance /total time
A.s = T.D/T.T
unit = m/sec or Km/hr
Instantaneous velocity
It is the distance traveled by body at particular instant of time ,in given direction .
Displacement
It is the shortest path traveled by body in given direction .
Answer:
6 moles of ZnSO₄ produces 6 moles of Ag₂SO₄ .
Explanation:
Given data:
Moles of ZnSO₄ = 6.00 mol
Moles of Ag₂SO₄ = ?
Solution:
Chemical equation:
2Ag + ZnSO₄ → Ag₂SO₄ + Zn
Now we will compare the moles of ZnSO₄ and Ag₂SO₄.
ZnSO₄ : Ag₂SO₄
1 : 1
6.00 : 6.00
So 6 moles of ZnSO₄ produces 6 moles of Ag₂SO₄ .
Yes because it can not go back to its previous state
An example of a nuisance, oxygen reacts with iron to form rust.
This reaction involves the addition of oxygen, which is not needed.
2Fe(s) + 2H2O(l) + O2 (g)---> 2Fe^+2 (aq) + 4OH- (aq)
