The name and structure of the product formed by the reaction of benzoic acid and 2-propanol should be given. Concept introduction: Ester: One − O R ' group is attached to the carbonyl carbon atom of the compound. It is represented as R C O O R ' . The hydrogen atom of − C O O H is replaced by an alkyl group. The IUPAC name for the esters is written by replcing the ‘e’ of alkanes from ‘oate’. Esterification reaction: Esters are prepared by the reaction of a carboxylic acid and an alcohol molecule with the elimination of water molecule. The addition of a strong acid such as H 2 SO 4 is used to increase the rate of reaction . Here, the − O H group is attached to the carbonyl carbon atom of the carboxylic acid is being replaced by − O R ' in the alcohol forming ester and water.

Question

A block of zinc has an initial temperature of 94.2 degrees celcius and is immererd in 105 g of water at 21.90 degrees celcius. At thermal equilibrium, the final temperature is 25.20 degrees celcius. What is the mass of the zinc block? Cs(Zn) = 0.390 J/gxdegrees celcius Cs(H2O) = 4.18 J/gx degrees celcus

Answer 1

Question

Chapter 23, Problem 54PS

Interpretation Introduction

Interpretation: The name and structure of the product formed by the reaction of benzoic acid and 2-propanol should be given.

Concept introduction:

Ester: One −OR' group is attached to the carbonyl carbon atom of the compound. It is represented as RCOOR'. The hydrogen atom of −COOH is replaced by an alkyl group.

The IUPAC name for the esters is written by replcing the ‘e’ of alkanes from ‘oate’.

Esterification reaction: Esters are prepared by the reaction of a carboxylic acid and an alcohol molecule with the elimination of water molecule. The addition of a strong acid such as H2SO4 is used to increase the rate of reaction.

Here, the −OH group is attached to the carbonyl carbon atom of the carboxylic acid is being replaced by −OR' in the alcohol forming ester and water.

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A block of zinc has an initial temperature of 94.2 degrees celcius and is immererd in 105 g of water at 21.90 degrees celcius. At thermal equilibrium, the final temperature is 25.20 degrees celcius. What is the mass of the zinc block? Cs(Zn) = 0.390 J/gxdegrees celcius Cs(H2O) = 4.18 J/gx degrees celcus

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