A student arranges an investigation to examine the variables influencing the solubility of sodium chloride. The student introduces 5.0g of sodium chloride into four separate beakers, each holding 250 mL of water. Next, the student positions the beakers on distinct hot plates and elevates their temperatures to the subsequent levels:

Question

Beaker A: 30°C

Beaker B: 40°C

Beaker C: 50°C

Beaker D: 60°C

In which of the beakers would the dissolution of sodium chloride occur most rapidly?

(1 point)
Responses

Beaker B
Beaker B

Beaker D
Beaker D

Beaker C
Beaker C

Beaker A

Answer 1

The dissolution of sodium chloride (NaCl) occurs more rapidly at higher temperatures, as increased temperature generally results in increased solubility and greater kinetic energy of the water molecules, facilitating the breaking apart of the NaCl crystals.

In this experiment, the beaker with the highest temperature is Beaker D at 60°C. Therefore, the dissolution of sodium chloride would occur most rapidly in:

Beaker D