
Video thí nghiệm.Thầy Tường
Interactive Video
•
Chemistry
•
12th Grade
•
Medium
Mành Thị
Used 1+ times
FREE Resource
3 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nhúng thanh Cu vào dung dịch AgNO3. Sau một thời gian, hiện tượng quan sát được là
DD từ không màu chuyễn sang màu xanh
DD từ không màu chuyễn sang màu vàng
DD nhạt dần màu xanh
DD từ màu vàng chuyển sang màu xanh
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nhúng thanh Cu vào dung dịch AgNO3. Sau một thời gian lấy thanh Cu ra khỏi dd thì khối lượng tăng hay giả
Không thay đổi
Giảm
Tăng
Không xác định
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nhúng thanh Cu vào dung dịch AgNO3. Sau một thời gian phản ứng xãy ra. vai trò của các chất trong phản ứng trên là
Cu là chất oxi hoá
AgNO3 là môi trường
AgNO3 là chất khử
Cu là chất khử
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