The statement '' water not used to extinguish most fires in an organic laboratory" should be explained. Also, the safety issues with the given scenario should be explained. Concept introduction: The interaction of water and organic compounds makes them unusable as a fire control measure in an organic laboratory. Organic compounds are generally lighter than water and thus float on water. When water is used as a control measure to put out fire the fire is spread due to the flow of water. An organic laboratory is guided to follow a set of precautious measures which helps in reducing the risks of accident breakout. These measures include use proper disposal and aeration of labs.

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A small artisanal cheesemaker is testing the acidity of their milk before it coagulates. During fermentation, bacteria produce lactic acid (K₁ = 1.4 x 104), a weak acid that helps to curdle the milk and develop flavor. The cheesemaker has measured that the developing mixture contains lactic acid at an initial concentration of 0.025 M. Your task is to calculate the pH of this mixture and determine whether it meets the required acidity for proper cheese development. To achieve the best flavor, texture and reduce/control microbial growth, the pH range needs to be between pH 4.6 and 5.0. Assumptions: Lactic acid is a monoprotic acid H H :0:0: H-C-C H :0: O-H Figure 1: Lewis Structure for Lactic Acid For simplicity, you can use the generic formula HA to represent the acid You can assume lactic acid dissociation is in water as milk is mostly water. Temperature is 25°C 1. Write the K, expression for the dissociation of lactic acid in the space provided. Do not forget to include state symbols.…

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Chapter 2, Problem 3Q

Interpretation Introduction

Interpretation:

The statement '' water not used to extinguish most fires in an organic laboratory" should be explained. Also, the safety issues with the given scenario should be explained.

Concept introduction:

The interaction of water and organic compounds makes them unusable as a fire control measure in an organic laboratory. Organic compounds are generally lighter than water and thus float on water. When water is used as a control measure to put out fire the fire is spread due to the flow of water.

An organic laboratory is guided to follow a set of precautious measures which helps in reducing the risks of accident breakout. These measures include use proper disposal and aeration of labs.

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A small artisanal cheesemaker is testing the acidity of their milk before it coagulates. During fermentation, bacteria produce lactic acid (K₁ = 1.4 x 104), a weak acid that helps to curdle the milk and develop flavor. The cheesemaker has measured that the developing mixture contains lactic acid at an initial concentration of 0.025 M. Your task is to calculate the pH of this mixture and determine whether it meets the required acidity for proper cheese development. To achieve the best flavor, texture and reduce/control microbial growth, the pH range needs to be between pH 4.6 and 5.0. Assumptions: Lactic acid is a monoprotic acid H H :0:0: H-C-C H :0: O-H Figure 1: Lewis Structure for Lactic Acid For simplicity, you can use the generic formula HA to represent the acid You can assume lactic acid dissociation is in water as milk is mostly water. Temperature is 25°C 1. Write the K, expression for the dissociation of lactic acid in the space provided. Do not forget to include state symbols.…

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