CHE-115 YCMOU Assignment Answers 2026-27

Master Inorganic Chemistry Practical Applications with YCMOU’s CHE-115 Solved Assignments

YCMOU’s CHE-115 Inorganic Chemistry – Practical assignments demand precision in theoretical understanding and hands-on problem-solving. This 2026-27 solved assignment guide eliminates guesswork by providing verified, step-by-step solutions aligned with the 2022 pattern syllabus. Avoid last-minute confusion—gain clarity on qualitative analysis, coordination compounds, and redox titrations before your Continuous Assessment (CA) submission.

Course Overview & Academic Objective

CHE-115 focuses on experimental techniques in inorganic chemistry, bridging theory with practical execution. Students develop skills in:

• Qualitative inorganic analysis (identification of cations/anions via systematic tests)
• Preparation and characterization of coordination compounds (spectroscopic, magnetic, and thermal analysis)
• Redox titrations and volumetric analysis (standardization of solutions, endpoint detection)
• Thermal decomposition studies (TGA/DTA interpretation for inorganic salts)

This assignment guide ensures you achieve 70%+ in CA by addressing common pitfalls in lab reports and calculations—directly mapped to YCMOU’s Self-Instructional Material (SIM) guidelines.

Key Syllabus Modules & Chapter Breakdown

The solved assignments cover all prescribed topics from the 2022 pattern syllabus, including:

• Chapter 1: Qualitative Analysis
  • Group separation of cations/anions with verified reagent volumes (e.g., 2M NaOH for Group III cations).
  • Error analysis in precipitation tests (e.g., why Fe³⁺ forms brown precipitates with NH₄SCN).
  • YCMOU-specific case studies on ambiguous results (e.g., distinguishing Al³⁺ and Cr³⁺).
• Chapter 2: Coordination Chemistry
  • Synthesis of [Co(NH₃)₆]Cl₃ with step-by-step molar ratio calculations (1:6 Co:NH₃).
  • Spectral data interpretation (e.g., λ_max for [Cu(NH₃)₄]²⁺ in UV-Vis).
  • Isomerism examples (geometric vs. optical) with YCMOU exam-style diagrams.
• Chapter 3: Redox Titrations
  • Standardization of KMnO₄ using Na₂C₂O₄·H₂O (molar mass 134.09 g/mol).
  • Endpoint detection methods (titration curves for Fe²⁺/Fe³⁺ redox pairs).
  • YCMOU’s practical lab errors (e.g., why burette readings must be taken at eye level).
• Chapter 4: Thermal Analysis
  • TGA/DTA curves for CaCO₃ decomposition (peak temp: 840°C).
  • Mass loss calculations (e.g., 44.01 g/mol CO₂ lost per mole CaCO₃).
  • YCMOU’s lab safety notes on handling anhydrous CaCl₂.

Continuous Assessment & Exam Utility

This guide is not just answers—it’s a CA preparation tool. Each solution includes:

• YCMOU’s marking scheme alignment (e.g., 3 marks for reagent selection, 2 for observations).
• Common TEE question patterns (e.g.,