<span>Scientists use-
Hardness</span>
<span />Streak
Density
Specific Gravity
ColorCrystal Shape.LusterCleavage/Fracture
The equation representing the decomposition of BaCO₃ is as follow:
BaCO₃(s) ⇄ BaO(s) + CO₂(g)
Standard Gibbs-free energy (ΔG⁰) = 220 kJ/mol
Gas constant (R) = 8.314 x 10⁻³ kJ/K.mol
Temperature (T) =25 + 273 = 298 K
ΔG⁰ = - R T lnK
ln K = - ΔG⁰ / RT = - 88.8
K =
= 2.7 x 10⁻³⁹
So the equilibrium constant of the reaction at 298 K is 2.7 x 10⁻³⁹
From the equation:
Equilibrium constant Kp = Pco₂
= 2.7 x 10⁻³⁹ atm
Answer:
(B) 8.32×10^-5
Explanation:
Rate of disappearance = change in concentration/time
Initial concentration = 0.0225
Final concentration = 0.00669
Change in concentration = initial concentration - final concentration = 0.0225 - 0.00669 = 0.01581
Time = 190
Rate of disappearance = 0.01581/190 = 8.32×10^-5
The balanced equation is,
OBz-(aq) + H2O(l) ---> HOBz(aq) + OH-(aq)
The equation for Kb is :
Kb = [HOBz][OH-]/[OBz]
<h3>What do we know about benzoate ion?</h3>
The conjugate base of benzoic acid, benzoate is the simplest member of the family of benzoates. It consists of a benzoic acid core with a proton missing to give it a charge of -1. It serves as a xenobiotic metabolite for humans as well as a metabolite for plants. It is a benzoic acid's conjugate base.
To learn more about pKb:
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