Question

Compare the floating of hydrometer in a diet cola with a regular soft drink

How could the hydrometer be modified to increase

A large tub of ice and water holds cans of both regular and diet pop. Some cans some don What can you surmise regarding their content?

POST-LAB Questions 1. Compare the floating of a hydrometer in a diet cola with a regular soft drink. How could the hydrometer be modified to increase accuracy? A large tub of ice and water holds cans of both regular and diet pop. Some cans float some don't. What can you surmise regarding their content?

Answer 1

1-A hydrometer is a device for measuring the density of liquids SO – The difference in the amount of dissolved sweeteners leads to a difference in density. Cans of regular soda tend to be more dense than water, so they sink. Cans of diet soda are usually less dense than water, so they float. Why does one can sink, and the other can float? The cans of regular soda have exactly the same volume, or size. But their density differs due to what is dissolved in the soda. Regular soda contains sugar as a sweetener. If you look at the nutrition facts on a can of regular soda, you will notice that it contains sugar...a lot of sugar. In some cases a 12 ounce can of regular soda will contain over 40 grams of sugar. And in Diet sodas, on the other hand, use artificial sweeteners such as aspartame. These artificial sweeteners may be hundreds of times sweeter than sugar, which means that less than a few grams of artificial sweetener is used in a can of diet soda. The difference in the amount of dissolved sweeteners leads to a difference in density. Cans of regular soda tend to be more dense than water, so they sink. Cans of diet soda are usually less dense than water, so they float. How could the hydrometer be modified to increase? If your hydrometer is properly calibrated, it is reading correctly. Remember, the hydrometer is actually measuring specific gravity of the mixture as a whole, not specifically alcohol or sugar content. The affect of the alcohol is part of what you are measuring in the FG reading. You're only using these readings to calculate approximate ABV, based on the change in gravity. The simple answer is that the density of the cans cause them to either float or sink. The cans of diet pop are less dense than water, so they float. The cans of regular pop are more dense than water so they sink. Now you may be wondering why the density of the cans different. The answer, is the type of sweetener used in each pop. • Sugar is used to sweeten regular pop, a lot of sugar. This large quantity of sugar causes the can to become more dense than water. Artificial sweeteners are used in diet pop. However, a smaller amount of artificial sweetener is used which causes the can to be less dense than water. So there you have it, even though the cans were the exact same shape, size and volume (335 mL) the densities were different.