state whether the following reactions are exothermic or endothermic: TOH2 +502 + N2 + 2 +...
4. Hot packs. All reactions are spontaneous; note that some are exothermic and some are endothermic. How can a spontaneous reaction Increase in energy? Hot packs, exothermic: CaClas) → Calag) + 2CH(aq) 4,H=-81.35 kd/mol. MgSO4(s) → Mg?"(aq) +507(ag) AH-91.22 kJ/mol Just plain hot-watch out! NaOH(s) → Na'(aq) + OH'(aq) AH = -44.50 kJ/mol. a. Pick one of the above reactions and calculate how much 1.0 g of the solid would increase the temperature of 100 mL of water. Let your...
Predict whether the following reactions will be exothermic or endothermic. A. N,g) +3H )2NH,) 2H,+o,) Bond (kJ/mol) 432 942 494 155 386 459 522 Endothermic: H-H F-F H-N H-O S O Exothermic: n A
Determine whether each reaction indicates an endothermic or an exothermic reaction. Drag the appropriate items to their respective bins. View Available Hint(s) Reset Help AB(1)-A() +B(1) 4NH3(g) +502(g) 4NO(g) + 6H2(gC(s) + H2O(g)-CO() +H,($) energy of reactants = - 184 k1ergy of reactants = -242 kJC(s) + energy of products = - 1086 k malergy of products = - 111 kJ/mot 0,() +CO(g) Exothermic Endothermic
Bond H-H Predict whether the following reactions will be exothermic or endothermic. Reaction A. N. (9) + 3H,9 — 2NH, Reaction B. S(g) +0,2) 0,() Reaction C. 2H,09) — 2H,(g) +0,($) Reaction D. 2F(g) — F, (g) N=N AH° (kJ/mol) 432 942 494 155 0=0 F-F H-N 386 459 H-O S=0 522 Which reaction(s) are endothermic? Which reaction(s) are exothermie? D ID OB Strongest bond Weakest bond Answer Bank Si-F Si-I Si-CI
Question 3 (1 point) Label each of the following reactions as exothermic or endothermic ("exo" or "endo"), and according to whether work is done on or by the system, or no work is done at all ("on", "by" or "none")? Note that no "endo-on" cases appear here, as these are always thermodynamically unfavourable. There is no need to do any calculation, use chemical arguments to predict the sign of the enthalpy change. Zn(s)+2HC((aq) ZnCl2(aq) + H2lg) Cl2(aq) +2 KBr(aq) KCI(aq)...
need help with all Predict if the following reactions are exothermic or endothermic a) 2 H2(g) + O2(g/> 2 H2O(g) ΔΗ -484 kJ b) 2 Al(s) + Fe2O3(s) → 2 Fe(s) + Al2O3(s)AH =-852 kJ c) 2 H2O(g) 2 H2(g) + O2(g)AH :484 kJ d) 2 NH3(g) → N2(g) + 3 H2(g)AH = 92.2 kJ e) H2O(g) H2O(l) ΔΗ--44 kJ
Use the values of AH to calculate AHº for the following reactions. CO2(9) Substance and State AH (kJ/mol) C2H5OH(1) -278 02 (9) -393.5 H2O(9) -242 H2O(1) -286 TiC14(9) -736 TiO2 (s) -945 H+ (aq) ci- (aq) -167 MgO(s) -602 Mg(OH)2(s) -925 + ) — (8) + (8) a. Hoc AH° = DK b. TiCl4(g) + 2H2O(l) + TiO2 (s) + 4HCl(aq) AH° = C kJ c. MgO(s) + H2O(l) + Mg(OH)2(s) AH° = C kJ
Calculate the enthalpy change for the following reactions. Balance the equation and calculate the enthalpy change: 9. MgO(s) + H, (g) + Mg(s) + H,O(1) Mg(s) + 12 0,) ► MgO(s) AH =-602 kJ H,(s) + 0,(9) H,00 AH = –242 kJ 602 kJ - 242 kJ = 360 kJ = AH 10. NaCl(s) + H2O → Na+ (aq) + Cl(aq) NaCl(s) → Nat(g) + CH) Nat(g) + CHg) → Na*(aq) + Cl(aq) AH =? AH = 788 kJ/mol AH...
Appropriately combine the measured enthalpies of reactions (2) and (3) to predict (delta)H1 for the following reaction: Reaction (1): CaCO3(s) + H2O(l) ------> Ca(OH)2 (g) + CO2 (g) (delta) H1 equals what? Based on the predicted enthalpy, indicate whether Reaction (1) is endothermic or exothermic. Reaction (1) CaCO3(s) + H2O(l) ----> Ca(OH)2(s) + CO2(g) Reaction (2) CaCO3(s) + 2HCl (aq) ----> CaCl2(aq) + H2O(l) + CO2(aq) Reaction (3) CaCl2(aq) + 2H2O(l) ----> Ca(OH)2(s) + 2HCl(aq)
1. Classify the following as an endothermic or exothermic reaction: a. Making popcorn in a microwave oven. b. Boiling water. 2. Balance each of the following equations. Classify each reaction as synthesis, decomposition, single-displacement, or double-displacement.? a. H + Bry → HB b. BaOx(s) H2SO4(aq) → BaSO4(s) + H2O2(aq) c, Ba(ClO 2 + Heat → BaCl2 d. Song) + O2(g) → SO, e. Na HO → NaOH + H2 3. Calculate the number of molest a. 2.10kg NaHCO3 b. 9.8...