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

Evaluate the expression -2a+1: 1) a≥2 2) a<1 3) -1 ≤ a <2​
Find the value of x. 6 X X + 1 9
4. Simplifyyyyyyyyyyyyyyuyyyyyyyyyyyy
What other continents directly touch Asia
Activity: Use a dictionary and fill in the empty boxes with the correct parts of speech for the given root words. Please note that some root words might not hav
What changes have occurred in Paul in the book a Lesson Before Dying
What other continents directly touch Asia
Please Help ASAP! (See Attached) - Brainliest + 100 pts!!!
Ella manages a cafe. One morning, she sells the following drinks 41 large coffees 4 regular hot chocolates 28 large teas A total of 9 hot chocolates A total of
Who was known as tiger of the north in the Mexican revolution