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		<h1>Dạng bài tập có sử dụng tỷ khối của hỗn hợp khí</h1>
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			<li>Thứ tư - 23/09/2020 11:16</li>
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			<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PL" style="font-weight:normal">Giải:&nbsp;&nbsp;&nbsp; mA = mSO<sub>2</sub> + mO<sub>2</sub> = 0,8 . </span><span lang="PT-BR" style="font-weight:normal">64 + 0,5 . 32 = 67,2 g</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; nA = nSO<sub>2</sub>&nbsp; + nO<sub>2</sub> = 0,8 + 0,5 = 1,3 mol</span></span></span></span><br  />
<img alt="" height="83" src="https://khobaitap.com/uploads/news/2020_09/image_94.png" width="254" /><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">Bài 2: Hỗn hợp khí A gồm CO và CO<sub>2</sub></span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">Cứ 17,92 lit hỗn hợp khí A có tỷ khối so với H<sub>2</sub> là 19. Hãy tính thể tích mỗi khí trong hỗn hợp A</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PL" style="font-weight:normal">Giải:</span></span></span></span><br  />
<img alt="" height="288" src="https://khobaitap.com/uploads/news/2020_09/image_95.png" width="492" /><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="FR" style="font-weight:normal">Bài 3: Hỗn hợp A gồm 2 khí CO<sub>2</sub> và H<sub>2</sub>S có thể tích (đktc) là 15,68 lit. Biết tỷ khối của hỗn hợp A so với H<sub>2</sub> là 19,14</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="FR" style="font-weight:normal">a.Tính % về thể tích mỗi khí trong hỗn hợp A</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="FR" style="font-weight:normal">b. Tính % về khối lượng mỗi khí trong hỗn hợp A</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PL" style="font-weight:normal">Giải:</span></span></span></span><br  />
<img alt="" height="283" src="https://khobaitap.com/uploads/news/2020_09/image_96.png" width="475" /><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PL" style="font-weight:normal">Bài 4: Một hỗn hợp X gồm 8,96 lit O<sub>2</sub>; 13,44 lit SO<sub>2</sub> và 3,36 lit SO<sub>3</sub> (đktc)</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PL" style="font-weight:normal">Hãy tính xem tỷ khối của hỗn hợp X so với không khí bằng bao nhiêu?</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">Giải:</span></span></span></span><br  />
<img alt="" height="174" src="https://khobaitap.com/uploads/news/2020_09/image_97.png" width="501" /><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">Bài 5: 44,8 lit hôn hợp X gồm C<sub>4</sub>H<sub>8</sub> và CH<sub>4</sub> (đktc) có tỷ khối so với H<sub>2</sub> là 23</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">a.Tính % thể tích mỗi khí trong hỗn hợp X</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">b.Tính % khối lượng mỗi khí trong hỗn hợp X</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">ĐS: %VC<sub>4</sub>H<sub>8</sub> = 75%</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; %VCH<sub>4</sub> = 25%</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; %mC<sub>4</sub>H<sub>8</sub> = 91,3 %</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; % mCH<sub>4</sub> = 8,7%</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">Bài 6: Khối lượng của 11,2 lit hỗn hợp khí A gồm SO<sub>2</sub> và SO<sub>3</sub> (đktc) là 38,4 g</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">a.Tính tỷ khối của A so với H<sub>2</sub></span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">b. Tính thể tích mỗi khí có trong 4 lit hỗ hợp A</span></span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-weight:bold"><span lang="PT-BR" style="font-weight:normal">c. Tính % khối lượng mỗi chất có trong hỗn hợp A</span></span></span></span><br  />
<img alt="" height="428" src="https://khobaitap.com/uploads/news/2020_09/image_98.png" width="619" /><br  />
<img alt="" height="68" src="https://khobaitap.com/uploads/news/2020_09/image_99.png" width="279" /><br  />
Bài 7: Khối lượng của 3,36 lit khí A gồm CO và CO2 (đktc) là 5 g<br  />
a.Tính tỉ khối của A so với H2<br  />
b. Tính thể tích mỗi khí có trong 3 lit hôn hợp A<br  />
c. Tính % về khối lượng của mỗi chất có trong hỗn hợp A<br  />
ĐS: dX/H2 =&nbsp;&nbsp;<br  />
VCO = 2 lit;&nbsp; &nbsp;VCO2 = 1 lit<br  />
%CO = 56%;&nbsp; %CO2 = 44%<br  />
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&nbsp;
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