Question

The balanced combustion reaction for C H is 2C,H,)+150,(g)12 CO,(g) +6H,O) +6542 kJ If 7.800 g C, H, is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of the water? C final temperature

Answer 1

Ans: Given balanced Combustion reaction is 2GH + 150₂ 12co, t. 6H0+ 6542 KJ au (9) SWEAT 1 2 moles 15 moles 12moles Emoles = 156g. = 480g = 528g. = 108g. 156 g. of G Ho release heat 6542 KJ 7.89. of G H 6 T aha 7.88 x 6542 KJ 6 = 327.1 KJO - 156 g worden MI 3397100 JA 1. Heat = mass of hox specific heat of hox AT Heat a mass of tho x specific heat of hox (Tp-T.) ->327100J = 5691.9 x 4.185/9. 'c * (9, -21°) = -21°c) = 13.8°C on & T = 2ict 13.8°c s Tactic vort (0) st > If = 34, 8 ) word i. Final, temperature (T) = 34.8°ctw obl si la sinal de milioane)