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สุชาดา วงษ์ตา
30. เฉลยข้อ 4
แนวคิด
เมื่อเพิ่มอุณหภูมิรบกวนสมดุล เนื่องจากเป็นสมดุลของปฏิกิริยาคายความร้อน ปฏิกิริยา
เกิดการย้อนกลับมากขึ้น ที่สมดุลใหม่พบว่า ลดลงส่วน และ
เพิ่มขึ้นจากตัวเลือก ที่เป็นไปได้ข้อเดียวคือข้อ 4
31. เฉลยข้อ 1
แนวคิด แก๊ส X และ Y ทำปฏิกิริยาได้แก๊ส Z ดังสมการ
X(g) + 3Y(g) 2Z(g)
เริ่ม 0.1 mol 0.1 mol 0 ปริมาตร 500 cm3
ข้อ 1 ถูก เพราะเมื่อขยายปริมาตรเท่ากับเป็นการลดความดันของแก๊สเป็นผลทำให้สมดุลเปลี่ยน
ย้อนกลับมากขึ้นไปด้านจำนวนโมลของแก๊สมากขึ้น เพื่อเพิ่มความดันให้มากขึ้น ที่
สมดุลใหม่จึง มีจำนวนโมลของ z ลดลง
ข้อ 2 ผิด เพราะค่า K แปรผันตรงกับ (Z)2 และ K แปรผันกับ (X) และ (Y)3
ข้อ 3 ผิด เพราะที่ภาวะสมดุลจะมีแก๊ส X,Y และ Z ทุกชนิดในกระบอกสูบ ซึ่งแต่ละแก๊สจะ
มีปริมาณคงที่
ข้อ 4 ผิด เพราะจะเพิ่มสารตั้งต้น Y เป็น 0.3 mol ทำปฏิกิริยากับ X 0.1 mol ถึงแม้ว่าเป็น
สัดส่วนกัน แต่ไม่ทำปฏิกิริยาเคมีได้หมดพอดี เนื่องจากระบบเกิดสมดุลได้ ระบบ
จะปรับตัวมันเอง ดังนั้นสารตั้งต้น Y และ ) จะเหลือคงที่ขณะสมดุล
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สุชาดา วงษ์ตา
30. เฉลยข้อ 4
แนวคิด
เมื่อเพิ่มอุณหภูมิรบกวนสมดุล เนื่องจากเป็นสมดุลของปฏิกิริยาคายความร้อน ปฏิกิริยา
เกิดการย้อนกลับมากขึ้น ที่สมดุลใหม่พบว่า ลดลงส่วน และ
เพิ่มขึ้นจากตัวเลือก ที่เป็นไปได้ข้อเดียวคือข้อ 4
31. เฉลยข้อ 1
แนวคิด แก๊ส X และ Y ทำปฏิกิริยาได้แก๊ส Z ดังสมการ
X(g) + 3Y(g) 2Z(g)
เริ่ม 0.1 mol 0.1 mol 0 ปริมาตร 500 cm3
ข้อ 1 ถูก เพราะเมื่อขยายปริมาตรเท่ากับเป็นการลดความดันของแก๊สเป็นผลทำให้สมดุลเปลี่ยน
ย้อนกลับมากขึ้นไปด้านจำนวนโมลของแก๊สมากขึ้น เพื่อเพิ่มความดันให้มากขึ้น ที่
สมดุลใหม่จึง มีจำนวนโมลของ z ลดลง
ข้อ 2 ผิด เพราะค่า K แปรผันตรงกับ (Z)2 และ K แปรผันกับ (X) และ (Y)3
ข้อ 3 ผิด เพราะที่ภาวะสมดุลจะมีแก๊ส X,Y และ Z ทุกชนิดในกระบอกสูบ ซึ่งแต่ละแก๊สจะ
มีปริมาณคงที่
ข้อ 4 ผิด เพราะจะเพิ่มสารตั้งต้น Y เป็น 0.3 mol ทำปฏิกิริยากับ X 0.1 mol ถึงแม้ว่าเป็น
สัดส่วนกัน แต่ไม่ทำปฏิกิริยาเคมีได้หมดพอดี เนื่องจากระบบเกิดสมดุลได้ ระบบ
จะปรับตัวมันเอง ดังนั้นสารตั้งต้น Y และ ) จะเหลือคงที่ขณะสมดุล
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Kim nguyen timeline
This document provides a personal timeline of Kim Nguyen's experiences with educational technology from kindergarten through college. It describes the technologies used at different stages of their education, including overhead projectors and VCRs in kindergarten, computers and PowerPoint in high school, and online learning platforms and document cameras in college. It also outlines a vision for the future classroom with touchscreen desks and ebooks.
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This document provides a personal timeline and overview of Kim Nguyen's experiences with educational technology from kindergarten through college. It discusses definitions of ed tech, websites on its history, the technologies used at different stages of education including overhead projectors, VCRs, PowerPoint, and online learning platforms. Kim highlights experiences with the Alphasmart and Kidpix programs. The document ends by discussing challenges of technology dependency and a vision for the future classroom with touchscreen desks and ebooks.
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This document provides a personal timeline of Kim Nguyen's experiences with educational technology from kindergarten through college. It describes the technologies used at different stages of their education, including overhead projectors and VCRs in kindergarten, computers and PowerPoint in high school, and online learning platforms and document cameras in college. It also outlines a vision for the future classroom with touchscreen desks and ebooks.
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