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Hóa học quanh ta !

Yes or No

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Trả lời 5 câu hỏi sau đây ? Bằng cách chọn Yes/No

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Hóa học quanh ta !
 

Hóa học quanh ta !Online version

Trả lời 5 câu hỏi sau đây ? Bằng cách chọn Yes/No

by Trương Toàn
1

Trong phản ứng HCl + NaOH → NaCl + H₂O, pH tại điểm tương đương luôn bằng 7.

2

Trong quá trình xử lý nước, người ta thường cho Al₂(SO₄)₃ vào để tạo bông cặn (flocculation).

3

Trong pin Daniell (galvanic cell), phản ứng oxi hóa xảy ra tại cực catốt (cathode).

4

Trong phản ứng xà phòng hóa, triglyceride tác dụng với NaOH tạo glycerol và muối natri của axit béo.

5

Polyethylene (PE) được tạo thành qua phản ứng trùng ngưng của ethylene (C₂H₄).

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