Вопрос школьника по предмету Химия
мне нужна помащь. Осадок образуется при взаимодействии водных растворов:
1) КСI и Са(NО3)2 ……… 3) СаСО3 и НСI
2) Ва(NО3)2 и АI2(SО4)3 ……… 4) АIСI3 и Ва(NО3)2
Ответ учителя по предмету Химия
Ответ:
2 , образуется осадок сульфат бария
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если можно с объяснением пожалуйста