39. What is an esterification reaction? Describe an activity to show esterification. a) What is allotropy? Give names of allotropes of carbon? 40. Answer the following questions: a... 39. What is an esterification reaction? Describe an activity to show esterification. a) What is allotropy? Give names of allotropes of carbon? 40. Answer the following questions: a) What is photosynthesis and write its reaction? b) Why pituitary gland is called master gland? c) Give an example of a plant hormone that promotes growth. d) Which hormone regulates blood sugar level in humans?
Understand the Problem
The question includes multiple parts related to biology and chemistry concepts like esterification, allotropic forms of carbon, photosynthesis, the role of plant hormones, and the functioning of the pituitary gland. It prompts for definitions and explanations of scientific principles.
Answer
Esterification is a reaction forming esters from acids and alcohols. Mix ethanol and ethanoic acid, add sulfuric acid. Allotropy is different forms of an element; carbon's are diamond, graphite. Photosynthesis: 6CO2+6H2O+light→C6H12O6+6O2. Pituitary is the master gland. Auxin promotes growth. Insulin regulates blood sugar.
An esterification reaction is when a carboxylic acid reacts with an alcohol to form an ester and water. Activity: Mix 1ml ethanol and 1ml ethanoic acid in a test tube, add 2-3 drops concentrated sulfuric acid, and warm gently to observe the fruity smell of ester formed. Allotropy is when an element exists in different forms due to different atomic arrangements. Carbon allotropes include diamond, graphite, and fullerene. Photosynthesis is the process by which plants make food using sunlight, carbon dioxide, and water: 6CO2 + 6H2O + light → C6H12O6 + 6O2. The pituitary gland is called the master gland because it regulates various hormones affecting different body functions. Auxins are plant hormones that promote growth. Insulin regulates blood sugar levels in humans.
Answer for screen readers
An esterification reaction is when a carboxylic acid reacts with an alcohol to form an ester and water. Activity: Mix 1ml ethanol and 1ml ethanoic acid in a test tube, add 2-3 drops concentrated sulfuric acid, and warm gently to observe the fruity smell of ester formed. Allotropy is when an element exists in different forms due to different atomic arrangements. Carbon allotropes include diamond, graphite, and fullerene. Photosynthesis is the process by which plants make food using sunlight, carbon dioxide, and water: 6CO2 + 6H2O + light → C6H12O6 + 6O2. The pituitary gland is called the master gland because it regulates various hormones affecting different body functions. Auxins are plant hormones that promote growth. Insulin regulates blood sugar levels in humans.
More Information
Esterification is a catalyzed reaction often using concentrated sulfuric acid. Diamond and graphite have different properties due to their structures, affecting hardness and electrical conductivity. In photosynthesis, chlorophyll in plants captures light energy.
Tips
Ensure the mixture is gently warmed and sulfuric acid is added carefully to avoid splashes.
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