Question

4.8 Write the expressions for the equilibrium constants for the following reactions , making the approximation of replacing activities by molar concentrations or partial pressures :

(a) G6P(aq)+H 2 O(l) rightleftharpoons G(aq)+P i (aq), , where G6P is glucose-6 phosphate, G is glucose, and , is inorganic phosphate. P i

(b) Gly(aq)+Ala(aq) rightleftharpoons Gly-Ala(aq)+H 2 O(l) )

(C) Mg^ 2+ (aq)+ATP^ + (aq) rightleftharpoons MgATP^ 2- (aq)

(d) 2 CH 3 COCOOH(aq)+5 O 2 (g) rightleftharpoons6 CO 2 (g)+4 H 2 O(l) )

Answer 1

In the equilibriuve expressgon Liquids and solids concentrations are Constant. So [liquids] = [solids] = 1. liquids and solids concentrations are not considered. for aqueous solution concentration ny [] for gaseous solutions partial pressure ale lised. G6P (aq) + tholl → Glaq) + Pi (aq) equilibricea constant (Kc) ☆ ☆ [G] [Pi] : [G6PJ [kyo) But ho is liquid so [ho] = 1 k = [G] [Pi ] 1. [G687 Gly (aq) + Alacan) - Gly-ala (91) + Hy ou equilibrium constant (K) = Goly-ala] [Gly] [Ara]

☺ Motocas) + Arpcan) — Mg App?cary equilibrium constant (Kc) [mga tpd [ngth] [Aipt] 2CH cocool (aq) + 52 (9) — 6C02(9)+4 holes Equilibrium constant CK) x = (kg) [chy cocok]" (Pou yo