Homework Answers
Answer:- (A) exothermic, the water temperature in the calorimeter temperature would rise
H2(g) + F2(g) → 2HF(g); ∆H° = –271 kJ
so according to the above reaction ∆H° value is negative that means that it is evolving heat during the reaction that this reaction is exothermic.
here we are using the clorimeter to measure the heat change
so the temperature of water will increase when reaction will happen
so the correct answer is A
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QUESTION 7 H2 and F2 react according to the following equation, forming HF. H2 + F2...
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,...
Can someone help me solve these 3 questions? 4. Hz and F2 react according to the...
Can someone help me solve these 3 questions?
4. Hz and F2 react according to the following equation, forming HF. HZB)+F2() - 2HF(g) AH =-271 kJ If H2(g) and FX) were mixed in a thermally insulated vessel, the reaction that occurred would be 5. Given the thermochemical equation 2Al(s) +20g) - AlO3(s): AH = -1676 kJ find AH for the following reaction. 2Al2O3(s) -4Al(s) + 30 (9) 6. How much heat is gained by copper when 77.5 g of copper...
Question 8 of 20 Using the equations H2(g) + F2 (g) → 2 HF (g) AH°...
Question 8 of 20 Using the equations H2(g) + F2 (g) → 2 HF (g) AH° = -79.2 kJ/mol C(s) + 2 F2 (g) → CF. (g) AH° = 141.3 kJ/mol 2 C(s) + 2 H2 (9) C2H4 (9) AH = -97.6 kJ/mol Determine the enthalpy for the reaction C2H4 (g) + 6 F2 (g) → 2 CF4 (9) + 4 HF (g). kJ/mol
Submit Question 33 of 50 For the chemical reaction H2 (g)+ F2 (g) 2 HF (g)...
Submit Question 33 of 50 For the chemical reaction H2 (g)+ F2 (g) 2 HF (g) AH = -79.2 kJ/mol. What is the enthalpy for the reaction 3 H2 (g)+3 F2 (g) 6 HF (g) kJ/mol 1 2 3 4 5 6 C 8 +- 0 x 100 O 7
Hydrogen and fluorine react to form hydrogen fluoride, like this: H2(9)+F2(9) 2 HF(G) The reaction is...
Hydrogen and fluorine react to form hydrogen fluoride, like this: H2(9)+F2(9) 2 HF(G) The reaction is exothermic. Suppose a mixture of H2, F, and HF has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation change in composition shift in equilibrium to the right The temperature is...
Given that H2(g) +F2(g) → 2HF(g) 2 H, (9) +0,(8) — 2H,O(1) calculate the value of...
Given that H2(g) +F2(g) → 2HF(g) 2 H, (9) +0,(8) — 2H,O(1) calculate the value of AHin for A Hisn = -546.6 kJ mol- A Hixn = -571.6 kJ mol- 2F2(g) + 2 H,O(1) — 4 HF(g) + O2(g) AH = kJ.mol-1 KJ-mol-'
Hess's Law Practice Find AH° for the following equation: SiO2(s) + 4HF(g) → SiF4(g) + 2H2O(g)...
Hess's Law Practice Find AH° for the following equation: SiO2(s) + 4HF(g) → SiF4(g) + 2H2O(g) Using the following equations: Si(s) + O2(g) → SiO2(s) Si(s) + 2F2(g) → SiF4(g) H2(g) + F2(g) → 2HF(g) H2(g) + 4202(g) → H2O(g) AH = -910.9 kJ/mol rxn AH = -1651 kJ/mol rxn AH = -542 kJ/mol rxn AH = -241.8 kJ/mol rxn
QUESTION 1 According to the following thermochemical equation, what mass of HF (in g) must react...
QUESTION 1 According to the following thermochemical equation, what mass of HF (in g) must react in order to produce 345 kJ of energy? Assume excess SiO2. SiO2(s) + 4 HF(g) SiF4(g) + 2 H20) AH®rxn = -184 kJ 1079 150.9 173 g 37.59 QUESTION 2 The value of AH® for the reaction below is -1107 kJ: 2Ba (s) + O2(g) + 2Bao (s) How many kJ of heat are released when 5.75 g of Bao (s) is produced? 96.3...
explain your answer, how do I know if it rises or falls? Hypothetical elements A2 and...
explain your answer, how do I know if it rises or falls?
Hypothetical elements A2 and B2 react according to the following equation, forming the compound AB. Az(aq) + B2(aq) 2AB(aq); AH = +271 kJ/mol If solutions Az(aq) and B2(aq), starting at the same temperature, are mixed in a coffee-cup calorimeter, the reaction that occurs is a exothermic, and the temperature of the resulting solution rises. b endothermic, and the temperature of the resulting solution rises. c endothermic, and the...
Be sure to answer all parts. Consider the following balanced thermochemical equation for a reaction sometimes...
Be sure to answer all parts. Consider the following balanced thermochemical equation for a reaction sometimes used for H2S production: =Sg(s) + H2(g) → H2S() AH rxn = -20.2 kJ his an exothermic or endothermic reaction? endothermic exothermic (b) What is AH rxn for the reverse reaction? KJ (c) What is AH when 3.10 mol of Sg reacts? kJ
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,...
Can someone help me solve these 3 questions?
4. Hz and F2 react according to the following equation, forming HF. HZB)+F2() - 2HF(g) AH =-271 kJ If H2(g) and FX) were mixed in a thermally insulated vessel, the reaction that occurred would be 5. Given the thermochemical equation 2Al(s) +20g) - AlO3(s): AH = -1676 kJ find AH for the following reaction. 2Al2O3(s) -4Al(s) + 30 (9) 6. How much heat is gained by copper when 77.5 g of copper...
Question 8 of 20 Using the equations H2(g) + F2 (g) → 2 HF (g) AH° = -79.2 kJ/mol C(s) + 2 F2 (g) → CF. (g) AH° = 141.3 kJ/mol 2 C(s) + 2 H2 (9) C2H4 (9) AH = -97.6 kJ/mol Determine the enthalpy for the reaction C2H4 (g) + 6 F2 (g) → 2 CF4 (9) + 4 HF (g). kJ/mol
Submit Question 33 of 50 For the chemical reaction H2 (g)+ F2 (g) 2 HF (g) AH = -79.2 kJ/mol. What is the enthalpy for the reaction 3 H2 (g)+3 F2 (g) 6 HF (g) kJ/mol 1 2 3 4 5 6 C 8 +- 0 x 100 O 7
Hydrogen and fluorine react to form hydrogen fluoride, like this: H2(9)+F2(9) 2 HF(G) The reaction is exothermic. Suppose a mixture of H2, F, and HF has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation change in composition shift in equilibrium to the right The temperature is...
Given that H2(g) +F2(g) → 2HF(g) 2 H, (9) +0,(8) — 2H,O(1) calculate the value of AHin for A Hisn = -546.6 kJ mol- A Hixn = -571.6 kJ mol- 2F2(g) + 2 H,O(1) — 4 HF(g) + O2(g) AH = kJ.mol-1 KJ-mol-'
Hess's Law Practice Find AH° for the following equation: SiO2(s) + 4HF(g) → SiF4(g) + 2H2O(g) Using the following equations: Si(s) + O2(g) → SiO2(s) Si(s) + 2F2(g) → SiF4(g) H2(g) + F2(g) → 2HF(g) H2(g) + 4202(g) → H2O(g) AH = -910.9 kJ/mol rxn AH = -1651 kJ/mol rxn AH = -542 kJ/mol rxn AH = -241.8 kJ/mol rxn
QUESTION 1 According to the following thermochemical equation, what mass of HF (in g) must react in order to produce 345 kJ of energy? Assume excess SiO2. SiO2(s) + 4 HF(g) SiF4(g) + 2 H20) AH®rxn = -184 kJ 1079 150.9 173 g 37.59 QUESTION 2 The value of AH® for the reaction below is -1107 kJ: 2Ba (s) + O2(g) + 2Bao (s) How many kJ of heat are released when 5.75 g of Bao (s) is produced? 96.3...
explain your answer, how do I know if it rises or falls?
Hypothetical elements A2 and B2 react according to the following equation, forming the compound AB. Az(aq) + B2(aq) 2AB(aq); AH = +271 kJ/mol If solutions Az(aq) and B2(aq), starting at the same temperature, are mixed in a coffee-cup calorimeter, the reaction that occurs is a exothermic, and the temperature of the resulting solution rises. b endothermic, and the temperature of the resulting solution rises. c endothermic, and the...
Be sure to answer all parts. Consider the following balanced thermochemical equation for a reaction sometimes used for H2S production: =Sg(s) + H2(g) → H2S() AH rxn = -20.2 kJ his an exothermic or endothermic reaction? endothermic exothermic (b) What is AH rxn for the reverse reaction? KJ (c) What is AH when 3.10 mol of Sg reacts? kJ
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