14. Given the 2 reactions below: 2NOE I. 2NO + 0z8) II. 2Li,Og + 1192 KJ → 4Lig Which statement is correct? a) reaction I- endothermic; reaction II– exothermic b) reaction I- heat energy is released; reaction II – heat energy is absorbed c) reaction I - AH sign is positive; reaction II - AH sign is negative d) all of the above + 113KJ + O:(g)

14. Given the 2 reactions below: 2NOE I. 2NO + 0z8) II. 2Li,Og + 1192 KJ → 4Lig Which statement is correct? a) reaction I- endothermic; reaction II– exothermic b) reaction I- heat energy is released; reaction II – heat energy is absorbed c) reaction I - AH sign is positive; reaction II - AH sign is negative d) all of the above + 113KJ + O:(g)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Based on the thermochemical equation shown below, which statement is correct? C6H12O6(s) + 602(g) → 6 CO2(2) + 6H2O@) + 2803 kJ OThe reaction is exothermic and has a positive AH O The reaction is exothermic and has a negative AH O The reaction is endothermic and has a positiveH The reaction is endothermic and has a negative AH O The reaction is exothermic and has a neutral AH
A chemist measures the energy change AH during the following reaction: 2 HgO(s) → 2 Hg(1)+O,(g) AH=182. kJ Use the information to answer the following questions. endothermic. This reaction is... x10 exothermic. Yes, absorbed. Suppose 56.6g of HgO react. Yes, released. Will any heat be released or absorbed? No. If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. kJ Round your answer to 3 significant digits.
The overall reaction in a commercial heat pack can be represented as 4 Fe(s) + 30₂(g) → 2 Fe₂O₂ (s) AH = -1652 kJ a. How much heat is released when 4.80 moles of iron are reacted with excess O₂? Heat = kJ b. How much heat is released when 1.00 mole of Fe2O3 is produced? Heat = kJ c. How much heat is released when 1.40 g iron is reacted with excess O₂? Heat = kJ d. How much heat is released when 11.4 g Fe and 1.90 g O₂ are reacted? Heat = kJ Submit Answer Retry Entire Group 9 more group attempts remaining
Consider the following formation reaction. Ni + 4C + 2O2 → Ni(CO)4 ΔH = -607kJ What mass of carbon reacts if 45.5 kJ of energy is released?
Consider the reaction. 2Fe2O3⟶4Fe+3O2 Δ?∘rxn=+824.2 kJ The decomposition of 74.0 g of Fe2O3 results in A.) the release of 382 kJ of heat. B.) the absorption of 191 kJ of heat. C.) the release of 191 kJ of heat. D.) the absorption of 30500 kJ of heat. E.) the release of 30500 kJ of heat. F.) the absorption of 382 kJ of heat.
113 kJ of heat is absorbed when one mole of carbon reacts with one mole of water. Energy + C + H2O → CO + H2 According to the reaction above it can be concluded that the reaction is a endothermic, because the change of enthalpy was negative b exothermic, because the change of enthalpy was negative c exothermic, because the change of enthalpy was positive d endothermic, because the change of enthalpy was positive
Consider the following reaction: 2 Mg + O22 MgO AH xn=-1203 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 97.2 grams of Mg. O-3862 kJ O-4812 kJ O-601.5 kJ -2406 kJ O-1203 kJ 13
c. Draw a potential energy diagram for the formation of NO₂(g): N₂(g) +20₂(g) → 2NO2(g). AHreaction = 66.2 kJ/mol. Label the graph with "Reactants," "Products," "AHreaction," and "Ea
2. The decomposition of ammonia gas into nitrogen gas and hydrogen gas is endothermic: 2 NH3 (g) → N2 (g) + 3 H2 (g) ΔH = 92 kJ/mol If 762 mL of hydrogen gas, measured at 325°C and 792 mmHg, is formed in the reaction above, how much heat will be absorbed?
In the following reaction, what is the quantity of heat (in kJ) released when 4.03 moles of CH₄ are burned? CH₄ (g) + 2 O₂ (g) → CO₂ (g) + 2 H₂O(g) ∆H° = -802 kJ/mol
A chemist measures the energy change AH during the following reaction: 2 NO,(9) → N,O4(9) AH=-55.3 kJ Use the information to answer the following questions. O endothermic. This reaction is... O exothermic. Suppose 82.9 g of NO, react. O Yes, absorbed. O Yes, released. Will any heat be released or absorbed? O No. If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round your answer to 3 significant digits. Explanation Check 02021 McGraw Hill LLC. Al Rights Reserved
When 25.0 g hydrogen gas react according to the following reaction, how many kJ of heat are released or consumed? CO (g) + 3 H2 (g) --> CH4 (g) + H2O (g) Delta Hrxn = – 206 kJ a. – 1.28 x 103 J b. – 25.5 J c. – 639 J d. – 2.55 x 103 J e. – 1.29 x 103 J f. none of these