Question

seven. the ph scale indicates a solutions ability to release or accept hydrogen ions. bases will accept hydrogen ions in exchange. acids, however, have a large number of free - floating hydrogen ions. when baking soda mixes with an acid, accepts the acids hydrogen ions and releases carbon dioxide gas. baking soda must be balanced with the right amo otherwise, the finished product will be brownish in color and taste vaguely of soap.
according to the passage, what is the purpose of baking soda?
○ to add additional flavoring to baked goods
○ to make baked goods fluffy rather than flat
○ to make acids in dough even more acidic
○ to darken the color of finished products
item code: 931367040

Explanation:

1. Analyze Option 1: The passage says if baking soda is unbalanced, the product tastes of soap, so it's not for flavoring. Eliminate this.
2. Analyze Option 2: Baking soda releases carbon dioxide gas (which makes baked goods fluffy) when mixing with acid. This matches the purpose.
3. Analyze Option 3: Baking soda is a base that accepts hydrogen ions (from acid), so it reduces acidity, not increase. Eliminate this.
4. Analyze Option 4: The passage states unbalanced baking soda makes the product brownish, so it's not to darken. Eliminate this.

Answer:

B. to make baked goods fluffy rather than flat