user-avatar
phambhue_bc
2 năm trước
i tập 5: Xác định số oxi hoá (gọi là x) của các nguyên tố trong các chất sau: ü S trong H2SO4; H2S; SO32- ü N trong NH3 ; HNO3; NH4+ ü Cl trong HCl; Cl2; HClO ü Bài 6: Cân bằng các phương trình hóa học sau bằng phương pháp thăng bằng electron. Cho biết chất oxi hoá và chất khử. ü a) KMnO4 + HCl à KCl + MnCl2 + H2O + Cl2 ü b) Fe + 6HNO3 à Fe(NO3)3 + 3NO2 + 3H2O ü c) HNO3 + H2S à S + NO + H2O ü d) Cl2 + NaOH à NaCl + NaClO + H2O
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I. Fill in the gap with suitable letter: 1. T….in… 2. M…y 3. …xpl…re 4. Cave 5. …oa… 6. ...ui….d 7. S….nd…as...le 8. Island 9. Se…sid… 10. Will II. Read and match: 1. Where will you be this weekend? 2. Where will Mai be tomorrow? 3. Where will Hung be next weekend? 4. What will your family do this weekend? 5. Will you visit Tuan Chau Island? 6. Where will Tom and Peter be next month? 7. What will you do at Ha Long Bay? 8. Why will you be at home, Hoa? a. They’ll be by the sea. b. I think I’ll swim in the sea. c. He’ll be in the mountains. d. I don’t know. I may explore the caves. e. Because I have to study. f. I think we will go for a picnic. g. She’ll be on the beach. h. I think I’ll be at home. III. Put the words in correct orders: 1. I/the/ I’ll/caves/ explore/ think/. 2. know/He/doesn’t/./He/ boat/ may/ the/ take/ a/trip/ islands/ around/. 3. Phuong/,/build/ Tuan/ and/ Hoa/ may/ beach/ sandcastles/the/ on/. 4. My/ will/ the/ family/ and/ sea/ I/ swim/ in/. 5. Seaside/ They’ll/be/the/ on/ at/Sunday/. 6. islands/ She’ll/Monday/ visit/ the/ on/. 7. be/ Where/ will/ Saturday/ you/on/? 8. and/I/think/school/Mai/ I/be/at/ will/. 9. countryside/The/ will/month/boys/ be/ in/ the/ next/. 10. I/ think/ tomorrow/ I’ll/the/ mountains/visit/. 11. countryside/We/picnic/ will/ for/ a/ in/ go/the/. 12. week/ the/ They/ seaside/ will/ be/ at/ next/.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team