Title CĐ14. NHIỆT PHÂN MUỐI (2023-2024) - ĐỀ.pdf ✅

CHUYÊN ĐỀ 14: NHIỆT PHÂN MUỐI (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 14: NHIỆT PHÂN MUỐI (9+) 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: Nhiệt phân tinh thể muối nitrat Câu 1. Nhiệt phân hoàn toàn 41,58 gam X (là muối ở dạng ngậm nước), thu được hỗn hợp Y (gồm khí và hơi) và 11,34 gam chất rắn Z. Hấp thụ toàn bộ Y vào nước thu được dung dịch T. Cho T tác dụng với 280 ml dung dịch NaOH 1M, thu được dung dịch chỉ chứa một muối duy nhất, khối lượng muối là 23,8 gam. Phần trăm khối lượng nguyên tố oxi trong X là A. 48,48%. B. 53,87%. C. 59,26%. D. 64,65%. (Đề chính thức BGD năm 2020 – Lần 1) Giải: ................................................................................................................................................................................................................................................................................................................................................................................................... ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ Câu 2. Nhiệt phân 25,6 gam tinh thể muối X đến khối lượng không đổi, thu được 4 gam chất rắn Y và hỗn hợp khí Z gồm khí và hơi. Hấp thụ toàn bộ Z vào nước, thu được dung dịch T. Cho T tác dụng với 200 ml dung dịch KOH 1M, thu được dung dịch chỉ chứa 20,2 gam muối duy nhất. Phần trăm khối lượng kim loại trong X là A. 9,375%. B. 34,043%. C. 31,111%. D. 23,140%. Giải: ................................................................................................................................................................................................................................................................................................................................................................................................... ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................