What type of process occurred when salt A dissolved in water?
Two grams of salt A were added to 50 mL of water, and the initial and final temperatures were recorded on the left side of Table 8 below. In a separate experiment, 2 g of salt B were added to 50 mL of water, and the initial and final temperatures were recorded on the right side of Table 8 below.
#bb"Table 8: Temperature Data for Salt A and Salt B"#
#bbul(color(white)(mmmm)"Salt A"color(white)(mmmmmmmmm)"Salt B"color(white)(mmmmm)#
#"Initial Temperature 20 ˚C"color(white)(m)"InitialTemperature 20 ˚C"#
#"Final Temperature"color(white)(ll) "35 °C"color(white)(m)"Final Temperature"color(white)(l) "10 °C"#
Answers:
Heat
Endothermic
Enthalpy
Exothermic
Two grams of salt A were added to 50 mL of water, and the initial and final temperatures were recorded on the left side of Table 8 below. In a separate experiment, 2 g of salt B were added to 50 mL of water, and the initial and final temperatures were recorded on the right side of Table 8 below.
Answers:
Heat
Endothermic
Enthalpy
Exothermic
1 Answer
A process is Endothermic when it requires energy input. A process is Exothermic when it releases energy.
Explanation:
If the water solution is cooler after the salt addition, it is an endothermic process.
If the solution is warmer after the salt addition, it is an exothermic process.
