Q6(b). Nickel gravimetry with dimethylglyoxime
Mention the principle for the gravimetric estimation of nickel employing dimethylglyoxime. Write down the requisite chemical equation. Draw the structure of the complex. Find the Gravimetric Factor (GF) for nickel in the complex. [Given: Atomic weight of nickel = 58.693]
Model answer
The free solution for 2023 answers questions 1, 3, 4, 7, 8 and 10, the ones picked in its time plan. Question 6 is answered in full in the Geo-Scientist Chemistry Paper I, 2021 to 2025 book, with every part of every paper.
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UPSC Combined Geo-Scientist (Main) Chemistry Paper I: Model Answers 2021 to 2025
- All eleven questions of each paper, with the question printed above its answer
- Titration, gravimetric and nuclear numericals worked with units; structures drawn
- Topic-wise weightage and a topic-wise index
Coversnickel dimethylglyoximeNi-DMGgravimetric factorgravimetric estimation of nickelsquare planar chelate
All parts of Question 6
- 6(a)(i) Coprecipitation and postprecipitation10 marks
- 6(a)(ii) Oxine and aluminium oxinate5 marks
- 6(b) Nickel gravimetry with dimethylglyoxime15 marks