A 0.0403 M solution of a particular monoprotic weak acid. HA, has a pH of 3,...
All four please thank you Which of the following is necessary for a process to be spontaneous? A) Delta H_sys < 0 B) Delta S_sys > 0 C) Delta S < 0 D) Delta S_univ > 0 E) Delta G_sys = 0 Which reaction has the largest Delta S degree? A) 2 N_2H_4(g) rightarrow 2 NH_3(g) + H_2(g) B) O_2(g) + 2 H_2(g) rightarrow 2 H_2O(l) C) O_2(g) + 2 H_2(g) rightarrow 2H_2O(g) D) N_2(g) + 3H_2(g) rightarrow 2NH_3(g) E)...
Need serious help on these 3! Please help! Which of the following should have the largest value of S degree? a) SF_6 (g) at 298K b) H_2O (l) at 298K c) He(g) at 298K d) CH_3OH (l) at 298K Which of these changes in the distribution of the nine particles shows an decrease in entropy? Which of these statements is true for this reaction? FeO(s) + CO(g) rightarrow CO_2(g) + Fe(s) Delta H = -11.0 kJ; Delta S = -17.4...
The c_p,m values of various real substances can be fit to the following equation, where a, and b are experimentally determined constants which are tabulated below for a variety of gasses and T is the temperature measure in Kelvin (K). Given that the delta H^0,en for this reaction at 298 K is 1268 kJ/mol, determine the delta H^0 for the reaction at 875 K. 6 H_2O + 2 N_2(g) rightarrow 4 NH_3(g) Given the delta H_t^0 and 5* values for...
A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the hydrogen ion concentration of this solution? Answer in scientific notation and be sure to include your units. (Scientific notation: Ex. 2.4 x 103 = 2.4E3) HA(aq) + H+ (aq) + A (aq) Answer: A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the value of the acid dissociation constant, K ? Answer in scientific...
Ethanol has a vapor pressure of 58.3 torr at 25 degree C. Determine the delta H (we assume that delta H in independent of temperature). l_n (p_2/58, 3) = delta / (1/351, 4 - 1/298) A 0.250 g chunk of sodium metal is cautiously dropped into a mixture of 50.0 g of water wend 50.0 g of ice at 0 degree C. The reaction is: 2Na(s) 2H2O) + 2H_2O(l) rightarrow 2NaOH(aq) +H_2(g); delta H = -368 kJ. Will all the...
A 0.685 M solution of a weak acid HA has a pH of 4.50. What is the percent ionization of HA in the solution? Submit Answer Tries 0/98 For the solution described above, what is the K,? Submit Answer Tries 0/98 This discussion is closed. Ote E o Type here to search 6
11. For a 0.10 M solution of a weak acid, HA, with pKa = 6, which of the following is true? A) [HA] [A] C) [HA] [H3O'] B) [HA] does not equal [H3O' D) [HA] K E) [HA] 0
intended to be a wered by estima . 1. Arrange the following in order of increasing absolute entropy at 298 K: Hect). Hg(s). C6H6(1). CH3CH3(1) a. Hel). Hg(s). CGHSCH3(1). C6H6(1) b. He(s). Hel). CHECH3(1). C6H6(1) c. C6H6(1). CH3CH3(I). Hg(s). Hg(1) d. CH CH3(1). CH6(). Hg(t). Hg(s) e. He(s). Hg(1), C6H6(). CHSCH 3(1) 2. Which of the following processes would be expected to have a positive AS value? a. 2 H2(g) + O2(g) → 2H2() b. H2(g) → H20(1) c. CO(g)...
A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by the reaction ATP(aq) + H,O(1) ADP(aq) + HPO- (aq) for which AG = -30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AG xn in a biological cell in which [ATP] = 5.0 mm, (ADP) = 0.10 mM, and (HPO 1 - 5.0 mM. AG...
You have a 2.0 Molar solution of an unknown acid, “HX”. Given the (25°C) thermodynamic data below, calculate Keq given that Keq = exp.[-ΔG/RT] and R is the gas constant 8.314 J/mol K Another useful equation : ΔG = ΔH - TΔS HX —> H+ + X- all aqueous Enthapies of formation Entropy of formation In KJ/mole in J/mole K HX 200 300 H+ 10 0 X- 250 175 Do you have to multiply the enthaply and entropy...