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08:05 Feb 16, 2005
English to English translations [PRO] Science - Chemistry; Chem Sci/Eng
English term or phrase:quenched
The reaction is stirred at ¨C50 to ¨C78oC for 2 hr, then quenched by careful addition of sat. aq ammonium chloride (30 mL) and stirring at room temperature for 30 min. The 5% sulfuric acid is added and stirring maintained for 5 min¡.
What does ¡°quenched¡± mean here. ¡°cool¡±? But it is already cool enough. :)