Limestone can be changed into slaked lime in two chemical reactions.
1 When limestone, $CaC{O_3}$, is heated it decomposes into lime, CaO.
2 Water is slowly dripped onto the cooled lime. The lime appears to expand and steam is produced. Slaked lime, $Ca{\left( {OH} \right)_2}$, is formed.
Which row shows the correct description of each of the chemical reactions?
1 )
reaction 1: endothermic / reaction 2: endothermic
reaction 1: endothermic / reaction 2: exothermic
3 )
reaction 1: exothermic / reaction 2: endothermic
4 )
reaction 1: exothermic / reaction 2: exothermic
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...