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Question
A Carefully replace unused or excess chemicals into their properly labeled containers from which they came B The rule is to add concentrated acid to water slowly C Flush eyes with water at the eyewash fountain for at least 15 minutes, and then report the accident for further help D The rule is to add water to the concentrated acid slowly E Dispose of chemicals in the proper places following posted procedures. Do not return them to their original containers
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Solution
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You can dilute a concentrated acid properly by adding concentrated acid to water slowly.
The dissolution of an acid in water is highly exothermic process as acid has strong affinity for water.
Large amount of heat is produced on mixing the acid with water. Hence, the acid is always diluted by adding the acid to water slowly and with constant stirring.
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