There are 6 bottles of water. Salt is added to the first one, a strong acid namely HCl to the 2nd one, a strong base namely calcium hydroxide to the 3rd one, a weak acid namely vinegar to the 4th one, a weak base namely baking soda to the 5th one and the 6th bottle of water is left in the same way.
What will happen to each bottle, what will each bottle look like and how will each bottle smell if we look at the experiment for the fourth day?
It is difficult to determine exactly what will happen to each bottle without knowing the concentrations and quantities of the substances added. However, we can make some general predictions:
1. The bottle with salt added will likely appear cloudy, as the salt will not dissolve completely in water. Depending on the amount of salt added, it may also have a salty taste and odor.
2. The bottle with HCl added will likely appear clear, as it will dissolve completely in water. However, it will have a strong, pungent odor similar to vinegar and could be harmful to smell or ingest.
3. The bottle with calcium hydroxide added will likely appear cloudy and may have a chalky texture if a large amount of it was added. It may also have a slightly bitter taste and odor.
4. The bottle with vinegar added will likely appear clear, but may have a slightly cloudy appearance due to the acetic acid. It will have a sour odor and taste.
5. The bottle with baking soda added will likely appear cloudy due to the sodium bicarbonate not dissolving completely. It may have a slightly salty taste and a faint odor.
6. The 6th bottle of water that was left unchanged will likely appear clear, have no taste or odor, and will look and smell like regular water.
On the fourth day of the experiment, here's what will likely happen to each bottle:
1. Bottle with Salt: The water with salt added will likely remain unchanged in appearance and smell. Salt usually dissolves completely in water, so there won't be any significant visual changes or noticeable odor.
2. Bottle with HCl: The addition of a strong acid like HCl will likely result in changes in both appearance and smell. HCl is highly corrosive and reactive, which means it will likely react with the water and create visible changes. The water might become cloudy or discolored, and an acidic odor may be present.
3. Bottle with Calcium Hydroxide: Adding a strong base like calcium hydroxide will result in changes to both appearance and smell. The reaction between calcium hydroxide and water forms a milky or cloudy precipitate known as calcium hydroxide suspension. This suspension will make the water appear cloudy, and a distinct alkaline smell might be noticeable.
4. Bottle with Vinegar: The addition of a weak acid like vinegar may result in minimal changes in appearance and smell. Weak acids do not typically cause noticeable changes unless the concentration is high. The water might have a slightly sour or vinegary smell, but no significant visual changes are expected.
5. Bottle with Baking Soda: Adding a weak base like baking soda may result in slight changes in appearance and smell. Baking soda (sodium bicarbonate) is soluble in water, so it will likely dissolve without causing substantial visual changes. However, a faint alkaline smell, similar to that of baking soda, may be present.
6. Bottle left unchanged: If the sixth bottle of water is left untouched, it will likely remain unchanged in appearance and smell. There shouldn't be any significant visual or olfactory changes compared to the initial state.
Please note that these observations are based on the provided substances and their typical behavior in water. Actual results may vary depending on the specific concentrations and conditions of the experiment.