Fire is considered one of the biggest hazards in a laboratory and there are four classes of fire. In a scenario where only water is available, name one of the classes of fire during which water is not a suitable distinguisher. Give your reason and suggest a suitable method to put out the fire you have identified.
Fire is considered one of the biggest hazards in a laboratory and there are four classes of fire. In a scenario where only water is available, name one of the classes of fire during which water is not a suitable distinguisher. Give your reason and suggest a suitable method to put out the fire you have identified.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:Prudent practices in laboratories reduce occupational risks that chemists are exposed to.
a)
Fire is considered one of the biggest hazards in a laboratory and there are four
classes of fire. In a scenario where only water is available, name one of the classes
of fire during which water is not a suitable distinguisher. Give your reason and
suggest a suitable method to put out the fire you have identified.
Expert Solution
Step 1
One of the major possible hazard in laboratory is fire.
It is important to recognize various fires and their extinguishers.
Types of fires:
Class -A fires : The fire caused by combustible paper, plastic, rubber, solid.
Class - B fires : The fire caused by organic solvents like pentane, diethyl ether, hexane, methanol, ethanol, toluene, tetrahydrofuran etc.
The other flammable liquids fires outside the laboratory which comes under class-B are petrol, diesel, gasoline.
Any liquid with flash point of <150C is flammable.
Note : flash point is the temperature at which a liquid produces ignitable vapors.
Class - C fires: Fire from electrical equipment.
Class - D fires: metal and metal hydride fires.
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