Question

Please help, really need this turned in!

While working in the chemistry lab, you dissolve 2.5g of sodium hydroxide chips into a beaker containing 50mL of water. As you pick up the beaker to add it to a separate solution, you notice the outside of the beaker is very cold. What explains this decrease in temperature?

Question 45 options:

Energy was absorbed when the bonds between sodium and hydroxide ions were broken


Energy was gained when the sodium and hydroxide ions formed new bonds with the water.


Energy was released when the sodium and hydroxide ions came together to form NaOH.


Energy was released when the bonds between sodium and hydroxide ions were broken.

Answer 1

Answer: this correct answer will be energy was released when the sodium and hydroxide ions formed new bonds with the water.

Step-by-step explanation:

Answer 2

Energy was gained when the sodium and hydroxide ions formed new bonds with the water.

Step-by-step explanation:

The other answer choices are incorrect because:

Energy was absorbed when the bonds between sodium and hydroxide ions were broken: This is incorrect because breaking bonds requires energy, so energy is absorbed rather than released.

Energy was released when the sodium and hydroxide ions came together to form NaOH: This is incorrect because the reaction being described is dissolution of NaOH in water, not formation of NaOH from its constituent ions.

Energy was released when the bonds between sodium and hydroxide ions were broken: This is incorrect for the same reason as the first option. Breaking bonds requires energy, so energy is absorbed rather than released.