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Content text CĐ15. BÀI TOÁN TINH THỂ MUỐI - (2024) - ĐỀ.pdf

CHUYÊN ĐỀ 15: TINH THỂ (2024) Biên soạn: Thầy Tony Long – Trung tâm luyện thi SunClass Trang 1 KHOÁ LIVE S – 2K6 Mục tiêu: 9+ LUYỆN THI THPT QUỐC GIA – NĂM HỌC: 2023 - 2024 CHUYÊN ĐỀ 15: TINH THỂ MUỐI Mức độ câu hỏi: Vận dụng – Vận dụng cao Thời gian yêu cầu: 4 phút / 1 câu Họ, tên thí sinh: ......................................................... Số báo danh: .............................................................. Dạng 1: Độ Tan Thay Đổi Theo Nhiệt Độ Câu 1. Hòa tan hoàn toàn 16 gam CuO trong 74 gam dung dịch H2SO4 thu được dung dịch X chứa một muối. Làm lạnh dung dịch xuống 10oC thấy tách ra m gam tinh thể CuSO4.5H2O và dung dịch Y. Biết độ tan của CuSO4 ở 10oC là 27,5. Giá trị của m gần nhất với giá trị nào sau đây? A. 25,00 B. 25,25 C. 35,00 D. 29,75 Giải: ................................................................................................................................................................................................................................................................................................................................................................................................... ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ Câu 2. Hòa tan hoàn toàn 27,54 gam Al2O3 bằng một lượng vừa đủ dung dịch HNO3, thu được 267,5 gam dung dịch X. Làm lạnh X đến 10°C thì có m gam tinh thể Al(NO3)3.9H2O tách ra. Biết ở 10°C, cứ 100 gam H2O hòa tan được tối đa 67,25 gam Al(NO3)3. Giá trị của m gần nhất với giá trị nào sau đây? A. 26. B. 84. C. 22. D. 45. Giải: ................................................................................................................................................................................................................................................................................................................................................................................................... ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ Câu 3. Hòa tan hoàn toàn 26,52 gam Al2O3 bằng một lượng vừa đủ dung dịch HNO3, thu được 247 gam dung dịch X. Làm lạnh X đến 20°C thì có m gam tinh thể Al(NO3)3.9H2O tách ra. Biết ở 20°C, cứ 100 gam H2O hòa tan được tối đa 75,44 gam Al(NO3)3. Giá trị của m gần nhất với giá trị nào sau đây? A. 90. B. 14. C. 19. D. 33. Giải: ................................................................................................................................................................................................................................................................................................................................................................................................... ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................

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