So sánh tốc độ của 2 phả...
Câu hỏi: So sánh tốc độ của 2 phản ứng sau [thực hiện ở cùng nhiệt độ, khối lượng Zn sử dụng là như nhau] .
A.[1] nhanh hơn [2].
B.[2] nhanh hơn [1].
C. như nhau.
D.ban đầu như nhau, sau đó [2] nhanh hơn[1]
Đáp án
A
- Hướng dẫn giải
Đáp án A
Sử dụng yếu tố diện tích tiếp xúc, TN1 Zn dạng bột sẽ làm tăng diện tích tiếp xúc, tốc độ phản ứng xảy ra nhanh hơn
Câu hỏi trên thuộc đề trắc nghiệm
25 câu trắc nghiệm Tốc độ phản ứng và cân bằng hóa học !!
Lớp 10 Hoá học Lớp 10 - Hoá học
Đáp án A
Sử dụng yếu tố diện tích tiếp xúc, TN1 Zn dạng bột sẽ làm tăng diện tích tiếp xúc, tốc độ phản ứng xảy ra nhanh hơn
Câu hỏi trên thuộc đề trắc nghiệm dưới đây !
Số câu hỏi: 25
Zn [bột] + dung dịch CuSO41M [1]
Zn [hạt] + dung dịch CuSO41M [2]
Kết quả thu được là
So sánh tốc độ của 2 phản ứng sau [thực hiện ở cùng nhiệt độ] : Zn [bột] + dung dịch CuSO4 1M [1] Zn [hạt] + dung dịch CuSO4 1M [2] Kết quả thu được là :
A. [1] nhanh hơn [2].
B. [2] nhanh hơn [1].
C. như nhau.
D. không xác định được.
Đáp án và lời giải
Đáp án:A
Câu hỏi thuộc đề thi sau. Bạn có muốn thi thử?
Bài tập trắc nghiệm hóa học lớp 10 Chuong 7: Tốc độ phản ứng – Các yếu tố ảnh hưởng đến tốc độ phản ứng - đề ôn luyện số 2 - cungthi.vn
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Một số câu hỏi khác cùng bài thi.
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So sánh tốc độ của 2 phản ứng sau [thực hiện ở cùng nhiệt độ] : Zn [bột] + dung dịch CuSO4 1M [1] Zn [hạt] + dung dịch CuSO4 1M [2] Kết quả thu được là :
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