Answer:
Dissociation of O-H bond is highly favorable in p-cyanobenzoic acid resulting to higher acidity as compared to m-cyanobenzoic acid.
Explanation:
In p-cyanobenzoic acid, adjacent carbon to carboxyl group (-COOH) gets a partial positive charge due to electron withdrawing resonating effect of carboxyl group as compared to m-cyanobenzoic acid.
Due to this partial positive charge on carbon atom in p-cyanobenzoic acid, O-H bond in -COOH group remains highly polarized towards oxygen atom. Hence, dissociation of O-H bond is highly favorable in p-cyanobenzoic acid resulting to higher acidity as compared to m-cyanobenzoic acid.
Resonance structures are given below.
<span>0.40008 L is the correct answer.</span>
Answer:
Pressure will decrease according to the Charles Gay Lussac law.
Explanation:
When there is a gas in a tank, and the moles of gas are not modified, neither the volume, we can notice that pressure will be modifying, in order to the absolute temperature, as directly proportion.
T° increase → Pressure increase
T° decrease → Pressure decrease
If the pressure keeps on constant, it will be the volume that would be modified according to the absolute T°, as a directly proportion.
Volume increase → T° increase
Volume decrease → T° decrease
Let's go to the maths
P₁ / T₁ = P₂/T₂
100 kPa / 333K = P₂ / 283K
(100 kPa / 333K) . 283K = P₂ → 84.9 atm
As T° has decreased, pressure also decreased.
Answer:
253 mmol
Explanation:
The solubility is calculated by the given equation:
S(g) = k P(g)
where k = 1.3 x 10⁻³ mol/L-atm
and P(g) = 0.21 (705 mmHg/760 mmHg/atm) = 0.195 atm
Notice the pressure is converted to atm because Henry´s constant is in units of atmospheres , and also we multiplied by 0.21 oxygen composition.
S(g) = 1.3 x 10⁻³ mol/L-atm x 1000 mmol/mol x 0.195 atm x =253 mmol
Here we did multiply by the factor 1000 mmol/mol since the mmol concentration is required in the answer.