Homework Answers
Question 4
Acid is known to be redily donates proton. NaOH and LiOH are redily gives OH- ions that are bases. NH3 also has loan pair of electron that redily accept protons. Thus NH3 also base.
HNO3 only gives proton. Hence HNO3 is an acid and Option B is correct answer.
Question 5
In the given equation, heat is absorbed and product is formed. Since heat is absorbed in the reaction, it is known as endothermic reaction. For endo thermic reactions, ΔH will have positive sign.
Option C is correct answer.
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QUESTION 4 Which of the following is an acid? NaOH HNO3 OLIOH O NH3 QUESTION 5...
NEED ANSWERS ASAP PLZ QUESTION 5 H2 and F2 react according to the following equation, forming...
NEED ANSWERS ASAP PLZ
QUESTION 5 H2 and F2 react according to the following equation, forming HF. H2 + F2 --> 2HF (AH° = -271 kJ/mol rxn) If H2(g) and F2(g) were reacted in a calorimeter, the reaction that occurred would be: O exothermic, and the water temperature in the calorimeter temperature would rise. O endothermic, and the water temperature in the calorimeter temperature would rise. O endothermic, and the water temperature in the calorimeter temperature would fall. O exothermic,...
HF QUESTION 4 If AH = 25 J for a certain process, that process O releases...
HF QUESTION 4 If AH = 25 J for a certain process, that process O releases heat is exothermic. O is endothermic. can't tell 1 QUESTION 5 The sign of AH for the process Heat + 2H90 --> 2Hg + O 2 is negative, and the process is endothermic. positive, and the process is exothermic. positive, and the process is endothermic. negative, and the process is exothermic. QUESTION 6
NEED ANSWERS ASAP PLZ QUESTION 4 AH° = -560 kJ Look at this reaction: 2H2(g) +...
NEED ANSWERS ASAP PLZ
QUESTION 4 AH° = -560 kJ Look at this reaction: 2H2(g) + O2(g) --> 2H20(1) Which one of the following statements is true? O Heat is absorbed during the reaction O The reaction is endothermic O The enthalpy change is positive O This reaction is exothermic QUESTION 3 If AH = 25 J for a certain process, that process O releases heat O is exothermic. O is endothermic. O can't tell
Question 12 (5 points) (12) For an acid - base neutralization reaction, which statement is true?...
Question 12 (5 points) (12) For an acid - base neutralization reaction, which statement is true? (b) It absorbs heat, and is exothermic. (a) It releases heat, and is exothermic. (c) It releases heat, and is endothermic (d) It absorbs heat, and it is endothermic. Question 13 (7 points) (13) In an acid-base reaction, 1 M of 100 ml. HCl(aq) is used to react with NaOH (aq). What is the mole number of HCI used? O(a) 1 mole (b) 0.1...
Verizon LTE 10:41 PM Done 2 of 2 Instructions ach question carefully and choose the correct answe...
Verizon LTE 10:41 PM Done 2 of 2 Instructions ach question carefully and choose the correct answer Question 2 2 pts What is the change in heat when 2 moles of NO reacts according to the following equation? 2NO(g) + 02(g)-+2NO2(g) ΔΗ -1 14.6 kJ ○ +229.2k) ○ +114.6k) 229.2 k 114.6k Next » Question 1 2 pts When an ice cube melts to form liquid water, is the change in enthalpy of the ice cube (the system) positive or...
Question 10 4 pts Which process has AS > 0 (increase S)? A) H2O(g) + H2O(1)...
Question 10 4 pts Which process has AS > 0 (increase S)? A) H2O(g) + H2O(1) B) 2Hg(1) + O2(g) - 2HgO(s) C) CaO(s) + CO2(g) CaCO3(s) D) 2Na,O2 (s) + 2H2O(s) 4NaOH(aq) + O2 (g) o B Ос ОА OD 4 pts Question 11
QUESTION 7 AH® - -560 kJ Look at this reaction: 2H2(g) + O2(9) --> 2H20(1 Which...
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
Multiple Choice - Circle the correct answer below each question (3 points cach) 1. Which of...
Multiple Choice - Circle the correct answer below each question (3 points cach) 1. Which of the following would you expect to have the highest boiling point? a F b. CI: CBE c. All of the above have the same boiling point 2. For which one of the following reactions is AH run equal to the heat of formation of the product? a. N2(g) + 3H2(g) - 2NH; (g) b. %N () + O2(g) - NO: () c. 6C(s) +...
35. Consider the following specific heats of metals. Metal Specific Heat Copper 0.385 J/(g. °C) Cobalt0.418...
35. Consider the following specific heats of metals. Metal Specific Heat Copper 0.385 J/(g. °C) Cobalt0.418 J/(g °C) Chromium 0.447 J/(g. °C) Gold Silver0.237 J/(g. °C) 0.129 J/(g.°C) If the same amount of heat is added to 100-g samples of each of the metals, which are all at the same temperature, which metal will reach the lowest temperature? a. copper b. cobalt c chromium d. gold e. silver x 36. The sign of AH for the process 12(s)- 12(3) is...
if the same amount of heat is added to 1.00 g of each substances which substance...
if the same amount of heat is added to 1.00 g of each
substances which substance will undergo the largest temperature
change
Pb.2. When MgSO. dissolves in water, the temperature of the solution increases. Fill out the following blanks about this reaction. The reaction of dissolution of MgSO4 is (exothermic or endothermic) The sign of AH for this reaction of dissolution is _(positive or negative) The sign of the quantity of heat of the solution, qol, is (positive or negative)...
NEED ANSWERS ASAP PLZ
QUESTION 5 H2 and F2 react according to the following equation, forming HF. H2 + F2 --> 2HF (AH° = -271 kJ/mol rxn) If H2(g) and F2(g) were reacted in a calorimeter, the reaction that occurred would be: O exothermic, and the water temperature in the calorimeter temperature would rise. O endothermic, and the water temperature in the calorimeter temperature would rise. O endothermic, and the water temperature in the calorimeter temperature would fall. O exothermic,...
HF QUESTION 4 If AH = 25 J for a certain process, that process O releases heat is exothermic. O is endothermic. can't tell 1 QUESTION 5 The sign of AH for the process Heat + 2H90 --> 2Hg + O 2 is negative, and the process is endothermic. positive, and the process is exothermic. positive, and the process is endothermic. negative, and the process is exothermic. QUESTION 6
NEED ANSWERS ASAP PLZ
QUESTION 4 AH° = -560 kJ Look at this reaction: 2H2(g) + O2(g) --> 2H20(1) Which one of the following statements is true? O Heat is absorbed during the reaction O The reaction is endothermic O The enthalpy change is positive O This reaction is exothermic QUESTION 3 If AH = 25 J for a certain process, that process O releases heat O is exothermic. O is endothermic. O can't tell
Question 12 (5 points) (12) For an acid - base neutralization reaction, which statement is true? (b) It absorbs heat, and is exothermic. (a) It releases heat, and is exothermic. (c) It releases heat, and is endothermic (d) It absorbs heat, and it is endothermic. Question 13 (7 points) (13) In an acid-base reaction, 1 M of 100 ml. HCl(aq) is used to react with NaOH (aq). What is the mole number of HCI used? O(a) 1 mole (b) 0.1...
Verizon LTE 10:41 PM Done 2 of 2 Instructions ach question carefully and choose the correct answer Question 2 2 pts What is the change in heat when 2 moles of NO reacts according to the following equation? 2NO(g) + 02(g)-+2NO2(g) ΔΗ -1 14.6 kJ ○ +229.2k) ○ +114.6k) 229.2 k 114.6k Next » Question 1 2 pts When an ice cube melts to form liquid water, is the change in enthalpy of the ice cube (the system) positive or...
Question 10 4 pts Which process has AS > 0 (increase S)? A) H2O(g) + H2O(1) B) 2Hg(1) + O2(g) - 2HgO(s) C) CaO(s) + CO2(g) CaCO3(s) D) 2Na,O2 (s) + 2H2O(s) 4NaOH(aq) + O2 (g) o B Ос ОА OD 4 pts Question 11
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
Multiple Choice - Circle the correct answer below each question (3 points cach) 1. Which of the following would you expect to have the highest boiling point? a F b. CI: CBE c. All of the above have the same boiling point 2. For which one of the following reactions is AH run equal to the heat of formation of the product? a. N2(g) + 3H2(g) - 2NH; (g) b. %N () + O2(g) - NO: () c. 6C(s) +...
35. Consider the following specific heats of metals. Metal Specific Heat Copper 0.385 J/(g. °C) Cobalt0.418 J/(g °C) Chromium 0.447 J/(g. °C) Gold Silver0.237 J/(g. °C) 0.129 J/(g.°C) If the same amount of heat is added to 100-g samples of each of the metals, which are all at the same temperature, which metal will reach the lowest temperature? a. copper b. cobalt c chromium d. gold e. silver x 36. The sign of AH for the process 12(s)- 12(3) is...
if the same amount of heat is added to 1.00 g of each
substances which substance will undergo the largest temperature
change
Pb.2. When MgSO. dissolves in water, the temperature of the solution increases. Fill out the following blanks about this reaction. The reaction of dissolution of MgSO4 is (exothermic or endothermic) The sign of AH for this reaction of dissolution is _(positive or negative) The sign of the quantity of heat of the solution, qol, is (positive or negative)...
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