Homework Answers
dH for reaction= dH(product) - dH(reactant)
=.-127.2 = [226.77 + (-986.2)] - [ dH(CaC2) + 2*(-285.83)]
= dH(CaC2) = -60.57 kJ/mol
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8. Calcium carbide (CaC2) reacts with water to form acetylene (C2H2) and Ca(OH)2. From the following...
arcording to the reaction below. 1. Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2)...
arcording to the reaction below. 1. Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2) according to the reaction below CaC2(s) + 2H20()Ca(OH)2(s) + C2H2(g) A certain mass of CaC2 reacts completely with water to give 64.5 L of acetylene at 50.0 °C and 1.00 atm. If the same mass of calcium carbide reacts completely at 400.0 °C and 1.00 atm, what volume of acetylene will be produced? a. 31.0 L b. 516 L c. 8.06 L d. 134...
1. Acetylene (C2H2) can be manufactured by the reaction of water and calcium carbide, CaC2. CaC2...
1. Acetylene (C2H2) can be manufactured by the reaction of water and calcium carbide, CaC2. CaC2 (s) + 2 H2O (l) ----> C2H2 (g) + Ca(OH)2 (aq) When 44.5 g of calcium carbide is reacted with 100.0 g of water, how much acetylene is produced? 2. If 15.8 g of acetylene is produced, what is the percent yield?
⦁ (12 pts) Calcium carbide, CaC2, reacts with water to form calcium hydroxide and the flammable...
⦁ (12 pts) Calcium carbide, CaC2, reacts with water to form calcium hydroxide and the flammable gas acetylene, C2H2. (Historically, this reaction was used for bicycle lamps and miner’s helmets!) When 96.5 g of calcium carbide was reacted with 52.3 g of water according to the reaction below, 99.3 g of calcium hydroxide was produced. What was the percent yield of this reaction? CaC2 + 2H2O Ca(OH)2 + C2H2
12. Acetylene can be made by allowing calcium carbide to react with water. CaC2 (s) +...
12. Acetylene can be made by allowing calcium carbide to react with water. CaC2 (s) + 2 H20 (1) ► C2H2(g) + Ca(OH)2 (5) What is the theoretical yield of acetylene (C2H2) if 6.132 g of calcium carbide (CaC2) is allowed to react with 2.455 g of water? a) 2.072 g C2H2 b) 1.774 g C2H2 c) 3.325 g C2H2 d) 1.691 g C2H2 13. If you isolate the acetylene gas in a 1.000 L flask at 298.3 K and...
Consider the production of calcium carbide and liquid water from acetylene: 1/2 Ca(OH)2(s) + 1/2 C2H2(g)...
Consider the production of calcium carbide and liquid water from
acetylene:
1/2 Ca(OH)2(s) + 1/2 C2H2(g)
1/2 CaC2(s) +
H2O(l)
H = 63.6 kJ
(a) What is the enthalpy change for the reverse reaction?
Hreverse = kJ/mol.
(b) Balance the forward reaction with whole-number coefficients.
What is H for the reaction represented by this
equation?
H = kJ/mol.
(c) Which is more likely to be thermodynamically-favored, the
forward reaction or the reverse reaction?
---Select--- The forward reaction. The reverse reaction.
(d) If...
Using the data below, calculate A Hexn for the production of acetylene from the reaction between calcium carbide and wa...
Using the data below, calculate A Hexn for the production of acetylene from the reaction between calcium carbide and water. Cac, (s) +2H2001) CH2(g) + Ca(OH),(s) Molecule CaC2 H2O C2H2 Ca(OH)2 AH (kJ/mol). -59.80 -285.8 226.7 -985.2 1st attempt Part 1 (1 point) W See Periodic Table See Hint A Hex = Part 2 (1 point) Is this an endothermic or an exothermic reaction? Choose one: exothermic endothermic
2 pts Acetylene can be made by allowing calcium carbide to react with water. CaC2 (s)...
2 pts Acetylene can be made by allowing calcium carbide to react with water. CaC2 (s) + 2H20 11-CH2 (8) + Ca(OH)2 (5 What is the theoretical yield of acetylene (C2Hz) 6.132 g of calcium carbide (CaCy) is allowed to react with 2455 g of water? O 16913C2H42681 O 2072 g C2H26 O 1774 g C2H2 (8) 3.325 g C2H2 D Question 13 2 pts If you isolate the acetylene gas in a 1.000 L flask at 298.3K and find...
Hw #3 Acetylene can be produced from calcium carbide and water: Cac,(s)+ 2 H2O(l) → C2H2(g) + Ca(...
Hw #3 Acetylene can be produced from calcium carbide and water: Cac,(s)+ 2 H2O(l) → C2H2(g) + Ca(OH)2(aq) In a CH118 experiment, acetylene gas was produced and collected over water It was found that 1.00 g of calcium carbide reacted to produce 290 ml of acetylene. How many grams of acetylene were produced? What was the percent yield for the reaction? Assume 22 °C and 750 torr. (760 torr 1 atm) HW #4 Assume there are 4.0 moles of a...
In reaction between 100.0 g calcium carbide, CaC2 and water (excess), calcium hydroxide, Ca (OH) 2,...
In reaction between 100.0 g calcium carbide, CaC2 and water (excess), calcium hydroxide, Ca (OH) 2, and ethylene gas C2H2 (also called acetylene) are formed. 1) Write down the balanced reaction equation includes states of matter. 2) What is the mass of the ethin produced at the end of the reaction? 3) The reaction gas is delivered in a balloon at 20 ° C and a pressure of 2.00 atm. What is a balloon volume? View calculations 4) What is...
Acetylene is prepared from the following reaction CaC2+ 2H2O → CHCH + Ca(OH)2 Density of acetylene...
Acetylene is prepared from the following reaction CaC2+ 2H2O → CHCH + Ca(OH)2 Density of acetylene = 1.1709 g/L 21. You reacted 10.0 grams of calcium carbide with excess water to form acetylene. Assuming a 67% yield, how many mL of acetylene could be collected at 25°C, latm?
arcording to the reaction below. 1. Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2) according to the reaction below CaC2(s) + 2H20()Ca(OH)2(s) + C2H2(g) A certain mass of CaC2 reacts completely with water to give 64.5 L of acetylene at 50.0 °C and 1.00 atm. If the same mass of calcium carbide reacts completely at 400.0 °C and 1.00 atm, what volume of acetylene will be produced? a. 31.0 L b. 516 L c. 8.06 L d. 134...
12. Acetylene can be made by allowing calcium carbide to react with water. CaC2 (s) + 2 H20 (1) ► C2H2(g) + Ca(OH)2 (5) What is the theoretical yield of acetylene (C2H2) if 6.132 g of calcium carbide (CaC2) is allowed to react with 2.455 g of water? a) 2.072 g C2H2 b) 1.774 g C2H2 c) 3.325 g C2H2 d) 1.691 g C2H2 13. If you isolate the acetylene gas in a 1.000 L flask at 298.3 K and...
Consider the production of calcium carbide and liquid water from
acetylene:
1/2 Ca(OH)2(s) + 1/2 C2H2(g)
1/2 CaC2(s) +
H2O(l)
H = 63.6 kJ
(a) What is the enthalpy change for the reverse reaction?
Hreverse = kJ/mol.
(b) Balance the forward reaction with whole-number coefficients.
What is H for the reaction represented by this
equation?
H = kJ/mol.
(c) Which is more likely to be thermodynamically-favored, the
forward reaction or the reverse reaction?
---Select--- The forward reaction. The reverse reaction.
(d) If...
Using the data below, calculate A Hexn for the production of acetylene from the reaction between calcium carbide and water. Cac, (s) +2H2001) CH2(g) + Ca(OH),(s) Molecule CaC2 H2O C2H2 Ca(OH)2 AH (kJ/mol). -59.80 -285.8 226.7 -985.2 1st attempt Part 1 (1 point) W See Periodic Table See Hint A Hex = Part 2 (1 point) Is this an endothermic or an exothermic reaction? Choose one: exothermic endothermic
2 pts Acetylene can be made by allowing calcium carbide to react with water. CaC2 (s) + 2H20 11-CH2 (8) + Ca(OH)2 (5 What is the theoretical yield of acetylene (C2Hz) 6.132 g of calcium carbide (CaCy) is allowed to react with 2455 g of water? O 16913C2H42681 O 2072 g C2H26 O 1774 g C2H2 (8) 3.325 g C2H2 D Question 13 2 pts If you isolate the acetylene gas in a 1.000 L flask at 298.3K and find...
Hw #3 Acetylene can be produced from calcium carbide and water: Cac,(s)+ 2 H2O(l) → C2H2(g) + Ca(OH)2(aq) In a CH118 experiment, acetylene gas was produced and collected over water It was found that 1.00 g of calcium carbide reacted to produce 290 ml of acetylene. How many grams of acetylene were produced? What was the percent yield for the reaction? Assume 22 °C and 750 torr. (760 torr 1 atm) HW #4 Assume there are 4.0 moles of a...
Acetylene is prepared from the following reaction CaC2+ 2H2O → CHCH + Ca(OH)2 Density of acetylene = 1.1709 g/L 21. You reacted 10.0 grams of calcium carbide with excess water to form acetylene. Assuming a 67% yield, how many mL of acetylene could be collected at 25°C, latm?
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