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		<h1>Đề thi HSG Môn Hóa Học</h1>
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			<li>Thứ bảy - 10/04/2021 05:17</li>
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			KỲ THI CHỌN ĐỘI TUYỂN HSG LỚP 9 HOÀNG MAI
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<a href="http://bblink.com/5KLuXP"><span style="font-size:11pt"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif"><b><span lang="VI" style="font-size:22.0pt"><span style="line-height:107%">ĐỀ VÀ ĐÁP ÁN CHI TIẾT TẢI TẠI ĐÂY</span></span></b></span></span></span></a><br  />
<span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><b><span lang="NL" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">Câu 1.</span></span></b><span lang="NL" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif"> <i>(2 điểm)</i> </span></span></span></span><br  />
<span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><span style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">Một hỗn hợp rắn gồm BaO, MgCO<sub>3</sub>, Al<sub>2</sub>O<sub>3</sub> và CuO. Trình bày phương pháp tách riêng từng chất từ hỗn hợp trên với điều kiện không làm thay đổi khối lượng mỗi chất so với ban đầu.</span></span></span></span><br  />
<span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><b><span lang="NL" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">Câu 2.</span></span></b><span lang="NL" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif"> <i>(4 điểm)</i> </span></span></span></span><br  />
<span style="font-size:11pt"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:13.0pt"><span style="line-height:107%"><span style="font-family:&#039;Times New Roman&#039;,serif">1.</span></span></span></b><span style="font-size:13.0pt"><span style="line-height:107%"><span style="font-family:&#039;Times New Roman&#039;,serif"> Tiến hành thí nghiệm với dung dịch của từng muối X, Y và Z, ta thấy các hiện tượng được ghi trong bảng sau:</span></span></span></span></span></span><br  />
<img alt="" height="392" src="https://khobaitap.com/uploads/news/2021_04/image_24.png" width="643" /><br  />
<span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><b><span lang="FR" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">2.</span></span></b><span lang="FR" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif"> Cho vào bình kín hỗn hợp cùng số mol C<sub>5</sub>H<sub>12</sub> và Cl<sub>2</sub> tạo điều kiện để phản ứng xảy ra hoàn toàn thu được sản phẩm hữu cơ mà trong mỗi phân tử chỉ chứa một nguyên tử Clo. Viết các công thức cấu tạo có thể có của các sản phẩm hữu cơ đó.</span></span></span></span><br  />
<span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><b><span lang="NL" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">Câu 4.</span></span></b><span lang="NL" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif"> <i>(3 điểm)</i> </span></span></span></span><br  />
<span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><span style="font-size:13.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif">Hình vẽ sau mô tả điều chế khí Z</span></span></span></span></span></span><br  />
<img alt="" height="159" src="https://khobaitap.com/uploads/news/2021_04/image_25.png" width="298" /><br  />
<span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:13.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif">1.</span></span></span></b><span style="font-size:13.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"> Nêu nguyên tắc chung điều chế khí Z.</span></span></span></span></span></span><br  />
<span style="font-size:11pt"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:13.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif">2.</span></span></span></b><span style="font-size:13.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif"> Lấy 4 trường hợp cụ thể của khí Z, rồi xác định các chất X, Y và viết các PTHH minh họa.</span></span></span></span></span></span><br  />
<span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><b><span lang="NL" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">Câu 5.</span></span></b><span lang="NL" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif"> <i>(5 điểm)</i> </span></span></span></span><br  />
<span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><span style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">Nhỏ từ từ từng giọt cho đến hết 300 ml dung dịch X gồm NaHCO<sub>3</sub> 0,1M và K<sub>2</sub>CO<sub>3</sub> 0,2M vào 100 ml dung dịch Y gồm HCl 0,2M và NaHSO<sub>4</sub> 0,6M, lắc đều. Sau khi phản ứng xảy ra hoàn toàn thu được V lít khí CO<sub>2</sub> (đktc) và dung dịch Z.</span></span></span></span><br  />
<span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">1.</span></span></b><span style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif"> Tính V.</span></span></span></span><br  />
<span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">2.</span></span></b><span style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif"> Thêm 100 ml dung dịch T gồm KOH 0,6M và BaCl<sub>2</sub> 1,5M vào dung dịch Z thu được m gam kết tủa. Tính giá trị của m.</span></span></span></span><br  />
<span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><b><span lang="NL" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">Câu 6.</span></span></b><span lang="NL" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif"> <i>(3 điểm)</i> </span></span></span></span><br  />
<span style="font-size:11pt"><span style="background:white"><span style="line-height:115%"><span style="font-family:Calibri,sans-serif"><span lang="VI" style="font-size:13.0pt"><span style="line-height:115%"><span style="font-family:&#039;Times New Roman&#039;,serif">Một hỗn hợp gồm 1 ankan và 1 anken. Dẫn A vào bình đựng 500 gam dung dịch Br<sub>2</sub> 4%, sau khi brom phản ứng hết thấy khối lượng bình brom tăng 3,5 gam và thu được khí bay ra khỏi bình có khối lượng 7,30 gam. Đốt cháy hoàn toàn khí bay ra thu được 21,56 gam CO<sub>2</sub>. Xác định công thức phân tử của hai chất ban đầu.</span></span></span></span></span></span></span><br  />
<br  />
<span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><i><span lang="NL" style="font-size:13.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">(Cho H=1; C=12; O=16; Na=23; Mg=24; S=32; Mg=24; Al=27; K=39; Cr=52; Fe=56; Cu=64; Zn=65; Br=80; Ba=137)</span></span></i></span></span><br  />
<br  />
<span style="font-size:11pt"><span style="line-height:110%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:13.0pt"><span style="line-height:110%"><span style="font-family:&#039;Times New Roman&#039;,serif">--- Hết ---</span></span></span></b></span></span></span><br  />
<span style="font-size:11pt"><span style="line-height:110%"><span style="font-family:Calibri,sans-serif"><i><span style="font-size:13.0pt"><span style="line-height:110%"><span style="font-family:&#039;Times New Roman&#039;,serif">(Thí sinh được sử dụng Bảng HTTH các nguyên tố hóa học, bảng tính tan;</span></span></span></i></span></span></span><br  />
<span style="font-size:11pt"><span style="line-height:110%"><span style="font-family:Calibri,sans-serif"><i><span style="font-size:13.0pt"><span style="line-height:110%"><span style="font-family:&#039;Times New Roman&#039;,serif">không dùng tài liệu khác, cán bộ coi thi không giải thích gì thêm)</span></span></span></i></span></span></span><br  />
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<span style="font-size:11pt"><span style="line-height:110%"><span style="tab-stops:dotted 297.7pt"><span style="font-family:Calibri,sans-serif"><span style="font-size:13.0pt"><span style="line-height:110%"><span style="font-family:&#039;Times New Roman&#039;,serif">Họ và tên thí sinh:.................................................................. Số báo danh:……………..</span></span></span></span></span></span></span><br  />
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