i think D in the question is the delta trianlgle Question 5 (1 point) For the...
Given the following reactions and subsequent delta H values, C2H6 (g) -> C2H2 (g) + 2H2 (g) delta H= 283.5 kJ H2 (g) + 1/2 O2 (g) -> H2O (g) delta H= -213.7 kJ 2CO2 (g) + 3H2O (g) -> C2H6 (g) + H2O (g) delta H= 849 kJ Find the delta H for the reaction: C2H2 (g) + 5/2 O2 (g) -> 2CO2 (g) + H2O (g)
Question 5 When delta G is negative (1 point) * enthalpy is negative reaction is spontaneous rx is at equilibrium rx is non-spontaneous Question 6 If a rx has delta S positive and delta H negative, the rx is (1 point) * non-spontaneous at all temp O spontaneous at all temp spontaneous only at high temp O spontaneous only at low temp
Question 12 When delta G is negative (1 point)* entropy is high and enthalpy low entropy low and enthalpy high when entropy is negative when entropy is zero Question 13 Question 13 When delta G is negative (1 point) * O initial G is high and final G is low initial G is low and final G is high intial G is in equilibrium with final G O none Question 14 When delta G is negative (1 point) * O...
QUESTION 7 AH® - -560 kJ Look at this reaction: 2H2(g) + O2(9) --> 2H20(1 Which one of the following statements is true? Heat is absorbed during the reaction The reaction is endothermic The enthalpy change is positive This reaction is exothermic
Could I please have some help with these? A11) Ephoton = Ebind + Ekin hc/delta = Ebind + 0.5mv^2/ I subbed in values provided and rearranged to find velocity.. It gave me a negative value. (Ebind = 206000 J, h= 6.6261x10^-34, c= 2.99x10^8, delta = 215 x 10^9m) A19) & A33) How would I go about these? Thank you Question A11. In a photoelectric effect experiment, what is the velocity of an electron emitted from a caesium (Cs) surface (Ebind...
consider the following reaction 2H2(g)+O2(g)--> 2H2O (I) delta H= -572KJ A) how much heat is evolved when 1.00 mole of H2O (I) is produced? B) how much heat is evolved when 4.03g H2 are reacted with 40.0g of O2? C) the total volume of hydrogen gas needed to fill the Hindenburg was 2.0*10^8 L at 1.0 atm and 25 degree C. How much HEAT was evolved when the Hidenburg exploded, assuming all of the hydrogen reacted (plenty of oxygen)?
5. Identify the following 4 reaction equations as decomposition, combustion, double displacement, combination, or single displacement. (4pts) a) Fe2O3(s) + 2Al(s) - 2Fe(s) + Al2O3(s) b) 2H20(1) → 2H2(g) + O2(g) c) C3H3(g) + 502(g) → 3C02(g) + 4H2O(g) d) LiOH(aq) + HNO3(aq) → LINO3(aq) + H2O(1)
Question 15 When delta G is negative (1 point) * None of the above O reaction is balanced in mass and energy O reaction is endothermic if entropy is positive reaction is exothermic if entropy is positive Question 16 When delta G is negative (1 point) * O None reactions are spontaneous because they were empirically determined and consistent with the theory Orx is at equilibrium Orx is non-spontaneous
Please help. Thanks. AS is negative for the reaction a. C6H1206 (5) 6C (s) + 6H2 (g) + 302 (g) b. Sr(NO3)2 (aq) + 2LIOH (aq) Sr(OH)2 (s) + 2LINO3 (aq) 2H20 (8) 2H2 (g) + O2 (g) d. CH3OH (I) - CH3OH (9) e LIOH (aq) - Li+ (aq) + OH- (aq)
QUESTION 4 The following exothermic reaction is allowed to reach equilibrium. 2H2(g) + O2(g) = 2H20(g) What happens to the reaction when the temperature is decreased? o Favors forward reaction Favors reverse reaction The reaction is still at equilibrium. 2 points Saved