HCBBS Forum (English)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

【Daily Question】Chemical Analysis Version 2019.12.12

2019-12-12View Original

Thread Content

This post was last edited by zjp on 2019-12-12 08:41. Multiple-choice question: In the indirect iodine method, which of the following operations is correct? A. Shake rapidly while titrating. B. Add an excess of KI, and then titrate at room temperature in the absence of direct sunlight; C. Titrate at a constant temperature of 70–80°C; D. Add starch indicator at the beginning of the titration. B
Reply #22019-12-12
B. Add an excess of KI, and titrate at room temperature away from direct sunlight
Reply #32019-12-12
B. Add an excess of KI, and titrate at room temperature away from direct sunlight

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.