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University of Barishal

Department of Computer Science and Engineering

Class Test Exam

Course Title: Chemistry (CHEM-1107)

Semester: 1st | Session: 24-25

Time: N/A | Marks: 5.00

Course Teacher: D. Mahmudul Hasan Sohag

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Set-B

1.

1)

Explain with the help of Le Chatelier's principle, the effect of temperature and pressure on the reaction:

N2O4(g) ⇔ 2NO2(g);    ΔH= +55.3KJ/mol

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2.50 Marks
2)

A 5.0 L vessel contained 0.0185 mole of phosphorous trichloride, 0.0158 mole of phosphorous pentachloride and 0.0870 mole of chlorine at 230°C in an equilibrium mixture. Calculate the value of Kc and Kp for the reaction:

PCl5 (g) ⇔ PCl3(g) + Cl2(g)

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2.50 Marks
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Contributors of this Question:

Role Name Date
Prepared By (Teacher): D. Mahmudul Hasan Sohag N/A
Uploaded By: Mst.Nusrat Jahan Nov. 26, 2025, 5:08 p.m.
Converted By (Img/PDF to Text): Baishakhi Bir Dec. 28, 2025, 9:11 p.m.
Reviewed By: Obaydul Hasan Nayeem Dec. 29, 2025, 10:52 a.m.
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