Melymarrupe6704 Melymarrupe6704
  • 04-01-2018
  • Chemistry
contestada

Calculate the amount of heat transferred when 2.60 g of c2h2(g) is consumed in this reaction at constant pressure

Respuesta :

Dejanras
Dejanras Dejanras
  • 13-01-2018
Answer is: 125,55 kJ.
Chemical reaction: 2C₂H₂(g) + 5O₂(g) → 4CO₂(g) + 2H₂O(g) ΔH = -2511 kJ.
ΔH = -2511 ÷ 2 = -1255,5 kJ for 1 mol.
m(C₂H₂) = 2,60 g.
n(C₂H₂) = m(C₂H₂) ÷ M(C₂H₂).
n(C₂H₂) = 2,60 g ÷ 26 g/mol = 0,1 mol.
Q = ΔH · n.
Q = 1255,5kJ · 0,1 mol = 125,55 kJ.
Answer Link

Otras preguntas

How to add bullet points in google slides??
With is the value of eight
Which astronomer discovered the phases of venus?
What is 10,000 less than 204,367?
If the atomic number of an element is 7 and its mass number is 16, how many neutrons are in the atom's nucleus
Which steps will help you identify central ideas in a sonnet.??
Which group has elements with the most diverse set of properties?? • Group 1A • Group 2A • Group 3A • Group 4A
How to convert 3.9 meters to centimeters
Use the terms (chaos) and (warring states period) to write about china in the zhou dynasty.. ASAP PLEASE
An acceleration of a freely falling body (9.8m/s^2) to ft/s^2