Chem Exp. Rep. 3

Chem Exp. Rep. 3 - 03/09/08 Experiment Report: The...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
03/09/08 Experiment Report: The Chemistry and Qualitative Analysis of Cations: Group III and IV PURPOSE: The purpose of this lab was to explore the chemistry in Group III and IV cations, namely Iron (III), Chromium (III), Nickel (II), Barium (II), and Calcium (II). This experiment also gave a better understanding of aqueous chemistry, such as when a chemical reaction occurs and when a chemical is dissolved in solution. We also used some Acid-Base chemistry by adding Nitric Acid, Sodium Hydroxide or Ammonia to turn a solution either acidic or basic. Finally, this lab also required us to some precipitation reactions, as we had to distinguish what the precipitate was during some reactions and extract the metal cations from the precipitate. RESULTS AND DATA: II. Separating and Confirming Selected Group III Cations: A. Precipitating Selected Group III Cations: Adding HNO 3 – Solution turns brownish-yellowish with brown precipitate Heating – Upon heating, solution turns into black color Adding NH 3 – Gas forms, smells of rotten eggs B. Separating and Confirming Chromium (III): Adding NH 3 – Solution becomes much warmer Adding 3% H 2 O 2 – Bubbles form; solution turns into brownish-yellow color; orange precipitate slowly forms. Heating – Gas bubbles slowly form
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This lab report was uploaded on 04/08/2008 for the course CHEM 202 taught by Professor Cummings during the Spring '08 term at Nevada.

Page1 / 3

Chem Exp. Rep. 3 - 03/09/08 Experiment Report: The...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online