C2H2O4 C2HO4- + H+
0.175 - x x x + y
C2HO4- c2o42– + H+
x - y y x + y
K2 = (y) (x +y) / (x-y)
As, y << x
So, K2 = (y) (x) / (x)
K2 = y =6.1 × 10^–5
Hence, concentration of (c2o42–) 6.1 × 10^–5 M
Answer:
c
Explanation:
ionic bonds; cations (metals) GIVE electrons to anions (nonmetals)
Hey there!:
Given that;
SO2 (g ) = (-296.8 kJ/mol) and SO3 (g )= (-395.7 Kj/mol)
2 SO2(g) + O2(g) --------------> 2 SO3(g)
ΔH reaction = ΔH of product - ΔH of reactant
We know that ΔH O2 = 0 kj
ΔH reaction = [2 x - 395.7] - [2 x - 296.8 +0.0 KJ]
= - 791.4 - (- 593.6)
= - 791.4 + 593.6
= - 197.8 kJ
Because there are 2 mole of SO2 coverted into 2 mole of SO3 :
=- 197.8 kJ/2 mol
ΔH°rxn = - 98.9 kJ/ mol
Hope that helps!
Answer:
c. Cr
Explanation:
The compound is containing ion.
If acid reacts with it, CO_2 evolves.
therefore, Cr would form a precipitate when added to an aqueous solution of this compound. Cr2CO3 is the precipitate.
Answer:
D. Homogeneous;Heterogeneous.
Explanation:
Homogeneous equilibrium refers to a reaction in which the reactants and products are in the same phase i.e whether gaseous or liquid. This means it's concentration reactants and products in a chemical reaction can vary over a wide range.
For example,
The Heterogeneous equilibrium refers to a reaction in which the reactants and products are in different phases i.e solid, gaseous, liquid or aqueous. Its position isn't dependent on the amounts of pure liquids or solids present in the reaction.
For example,