The heat of solution is found by adding a salt to water in a calorimeter and measuring the temperature change. The specific heat of water is 4.180 Joules per g per ºC. In the calculation of the heat of solution, ignore the contribution to specific heat and mass due to the salt. Assume that these contributions are negligible. The data collected are as follows:

Grams of water in the calorimeter 46.52
Grams of salt 4.5069
Initial temperature of water 22.83 ºC
Final Temperature 18.98 ºC

Calculate the following Heat of the solution of salt.

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Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.