Can someone check if these are right:
Tell reaction rate
1.) one antacid tablet is placed in a glass of cold water, while another table is placed in a glass of hot water. TEMPERATURE?
2.) a mixture of baking powder, flour, sugar, and eggs is placed in the oven. TEMPERATURE?
3.) a large medicine tablet is crushed before being swallowed. SURFACE AREA?
4.) Enzymes in the small intestine act on food as it is being digested. CATALYSTS?
5.) bellows are used to fan a fire in a fireplace SURFACE AREA?
6.) charcoal bricks are broken into smaller pieces before being placed I'm an outdoor grill. SURFACE AREA?
7.) a soft drink containing carbonic acid, which decomposes into carbon dioxide and water, is placed in the refrigerator. CONCENTRATION?
You need to rephrase the question and/or the answers. I don't understand either the question or the answer.
To determine if the given statements are right, let's analyze each situation and identify the relevant factors that affect the reaction rate.
1) In the case of antacid tablets, the temperature of the water will indeed affect the reaction rate. Typically, higher temperatures increase reaction rates. So, if one tablet is placed in hot water and the other in cold water, it is accurate to say that the temperature differs.
2) When a mixture of baking powder, flour, sugar, and eggs is placed in the oven, the reaction rate will be influenced by the temperature inside the oven. Baking usually requires a specific temperature range for proper reaction, so it is essential to maintain the appropriate temperature for baking. Thus, mentioning temperature is necessary in this case.
3) Crushing a large medicine tablet increases its surface area. When the surface area is increased, the reaction rate generally accelerates. Therefore, stating that the tablet is crushed before being swallowed correctly identifies the factor affecting the reaction rate.
4) Enzymes in the small intestine act as catalysts during food digestion. Catalysts are substances that speed up a chemical reaction without being consumed in the process. Enzymes alter the reaction rate by lowering the activation energy required to start the reaction. So, mentioning that enzymes act as catalysts in the small intestine is accurate.
5) Bellows being used to fan a fire in a fireplace increases the surface area of oxygen exposed to the fire. More surface area generally leads to an increased reaction rate. Thus, highlighting surface area in this scenario is appropriate.
6) Breaking charcoal bricks into smaller pieces before placing them on an outdoor grill also increases the surface area available for combustion. As mentioned earlier, increased surface area tends to enhance the reaction rate. Therefore, including surface area in this case is correct.
7) In this situation, placing the soft drink containing carbonic acid in the refrigerator affects the concentration of carbonic acid. Lowering the temperature generally decreases the solubility of gases like carbon dioxide in water, causing a decrease in concentration. Mentioning concentration accurately describes the effect of refrigeration on the reaction.
Overall, the provided statements appear to be right as they correctly identify the relevant factors affecting the reaction rates in each given scenario.