Question

goiter is an enlargement of the thyroid gland in the neck. the most common cause of goiters worldwide is a lack of iodine in the diet. in the united states, salt is iodized to prevent goiters caused by iodine deficiency. iodized salt is 0.7% nai and the remainder is nacl. which is the solvent which is the solute? nacl choose nai choose

Explanation:

Step1: Recall Solute-Solvent Definition

In a solution, the solvent is the component present in a larger amount, and the solute is the component present in a smaller amount (dissolved in the solvent).

Step2: Analyze Iodized Salt Composition

Iodized salt is 0.7% NaI and the rest (99.3%) is NaCl. So, NaCl is in a larger quantity, and NaI is in a smaller quantity.

Step3: Assign Solute and Solvent

Since solvent is the major component and solute is the minor component:

• For NaCl: It's the major component (99.3%), so it's the solvent.
• For NaI: It's the minor component (0.7%), so it's the solute.

Answer:

For NaCl: Solvent
For NaI: Solute