Which one of the following is always positive when a spontaneous process occurs?

Question

Which one of the following is always positive when a spontaneous process occurs? Delta S_universe Delta S_system Delta S_surroundings Delta H_universe Delta H_surroundings For the endothermic reaction lessthanorequalto Chateller's principle predicts that __________ will result in an increase in the number of moles of CO_2. decreasing the temperature removing some of the CaCO_3 (s) increasing the procure increasing the temperature none of the above Which solution below has the highest concentration of hydroxide ions' pH = 12.6 PH = 9.82 PH=7.93 PH = 321 pH = 7.00 The pH of a solution prepared by dissolving 0.350 mol of solid methylamine hydrochloride (CH_3NH_3Cl) in 1.001, of 1.10 M methylamine (CH_3NH_2) is _______. The K^+ for methylamine is 4.40 times 10^4. (Assume the final volume is 1.00 L) 10.61 11.14 1.66 10.28 2.86 Water (H_2O) and alcohol methanol (ch_3OH) are infinitely soluble in each other. The primary intermolecular force responsible for this is _______. The rate law of a reaction is rate = k[D||X]. The units of the rate constant are __________. mol L^-1 s^-1 L mol^-1 s^-1 mol L^-1 s_-2 L^2 mol^-2 s^-1 A Bronsted-Lowry base is defined as a substance that ________. acts as a photon donar increases [OH^-] when placed in H_2O acts as a proton acceptor increases [H^+] when placed in H_2O decreases [H^+] when placed in H_2O

Explanation / Answer

Which one of the following is always positive when a spontaneous process occurs?
answer : DELTA S universe

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The reaction below is exothermic:

2SO2 (g) + O2 (g) <--> 2SO3 (g)

Le Chatelier's Principle predicts that __________ will result in an increase in the number of moles of SO3 (g) in the reaction container.

A) increasing the pressure -----------answer
B) decreasing the pressure
C) increasing the temperature
D) removing some oxygen
E) increasing the volume of the container

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Which solution below has the highest concentration of hydroxide ions?

A. pH = 7
B. pH = 12.6------------answer
C. pH = 9.82
D. pH = 7.93
E. pH = 3.21

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