Question

10:57 ขึ Your answer is incorrect. Question 4 Incorrect Mark 0.00 out of 1.00 P Flag question Two solutions, one with a mass of 16.66 g, initially at 20.86 °C, and one with a mass of 66.82 g, initially at 26.79 °C were combined which resulted in a reaction taking place. The solution after mixing and reacting had a temperature of 50.04 °C. Calculate the heat associated with the reaction, assuming all solutions have a heat capacity of 4.341 JK-1 g1 Select one: a. None of the other options b. -8854J c. 1.085e5 J d. 8854 J e. -9500 J X Your answer is incorrect Question 5 Correct Mark 1.00 out of 1.00 P Flag question

Answer 1

Answer is (a) None of the other option

Explanation :-

To calculate the heat associated with reaction means we have to calculate the ∆H or q = mC_s∆T ie change in enthalpy .  

Here ∆H = q  because we are considering that reaction is taking place in constant pressure P

  Please find calculation part in the attachment .

At the end of the calculation we have positive value of ∆H and ∆T

it means this reaction is Endothermic means it absorbed heat from surrounding.

Note :

• A positive ∆H means that a reaction is endothermic as heat is absorbed from the surroundings to the system and the surroundings feel cold as the temperature decreases
• A negative ∆H means that a reaction is exothermic as heat is released from the system to the surroundings and the surroundings feel warm as the temperature increases.

nsuweL:- (a) Non of t above Grivev that when beth solution will be combined Hhetvill be change in temp. and Temp of hu mituu will be yiven by the formulo here. T- (16.66)(20RA)ナ(66.41)(26.79) g℃ So Ti given that after uua ction cmp. o Given that = S0. 04e-25.6072 AH 107,765.757 Jsm 297.133 k