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علم کیمیا - راز و رمز ترقه ها
یکشنبه 8 بهمن 1391  05:57 ب.ظ    ویرایش: - -
توسط: ک ی

صدای انفجار ترقه ها از واکنش شدید مخلوطی که باروت نامیده می شود حاصل می شود ، همان ماده ای که در قدیم برای مشتعل کردن تفنگ های سر پر استفاده می شد.این مواد با سایش دو سطح زبر روی هم که باعث جرقه زدن و دادن شوک ناگهانی می شود ، منفجر می شوند.استفاده از مخلوط حاوی سولفید آنتیموان ( Sb2S3 ) و پتاسیم کلرات ( KClO3) در ساخت ترقه رایج است.

چنان چه به این مخلوط شوک وارد کنیم، واکنشی انفجاری مطابق معادله زیر رخ می دهد.

Sb2S3 + 4KClO3 -----> Sb2(SO4)3 + 4KCl

نکته جالب درباره این مخلوط این است که برخلاف اکثر واکنش های انفجاری که تولید گاز، موج انفجار را ایجاد می کند، تولید ناگهانی انرژی در این واکنش صدای انفجار را ایجاد می کند. سرنج یا تتروکسید سرب
( Pb3O4 ) ماده اکسیژن دهنده دیگری است که به جای پتاسیم کلرات استفاده می شود.
 
منبع : مجله دانستنی ها - شماره 51 . 19 فروردین 1391 - ص 32

   


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