Page 25 - Chapter 9
P. 25
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2. ปฏิกิริยา SiO 2 (s) + 2C ( s) Si (s) + 2CO ( g ) ………(1)
Si (s) + 2Cl 2 ( g ) SiCl 4 ( l ) ………(2)
SiCl 4 ( l ) + 2H 2 ( g ) Si (s) + 4HCl ( g ) ………(3)
SiO 2 15 g เกิดปฏิกิริยาสิ้นสุดได้ HCl 30 g จงหาผลได้ร้อยละ
(ก าหนด มวลอะตอม H=1 C=12 O=16 Si =28 Cl=35.5)
กระบวนการคิดวิเคราะห์โจทย์และค านวณ
ขั้นที่ 1 ท าความเข้าใจปัญหา
1.1 สิ่งที่โจทย์ก าหนดให้
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1.2 สิ่งที่โจทย์ต้องการทราบ
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ขั้นที่ 2 วางแผนแก้ปัญหา
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ขั้นที่ 3 ด าเนินการตามแผน
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