Lab 7 halide ions - 2 Identity Ki Double unknown number 4...

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

View Full Document Right Arrow Icon
#4.4 Lab 7 Reactivity of Halide Ions Jennie Chang (even) Allison Yee (Partner- odd) November 4, 2010 EXTRA CREDIT
Background image of page 1

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

View Full DocumentRight Arrow Icon
Calculations: 1.Indicate the single unknown number. #2 2. Determine the identity of the single unknown. KBr 3. Include a few statements justifying your decision. The single unknown had the same reactions as KBr: It became a clear oil color as NaOCL and starch were added to it. 4. Indicate the double unknown number. #4 5. Determine the identity of the double unknown. NaCl+ KBr 6. Include a few statements justifying your decision. When the double unknown reacted with the AgNO3, the result was a milky white and yellow color. You could see that it was the same colors as NaCL and KBr, therefore we deduced that the double unknown was NaCL + KBr. Table of Results: Single unknown number
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2 Identity Ki Double unknown number 4 Identity NaCl+ KBr Discussion: This lab was very simple. My partner and I got through it very quickly. There weren’t many sources of error, however, 1) Out of carelessness, we stirred 2 different ions with the same toothpick. 2) It could have already had contamination from the previous period. 3) We put more than 5 drops by squeezing the dropper too hard. Conclusion: I learned that halide ions react differently with different reagents. My hypothesis was correct. Questions: 1. Which procedure confirms the presence of (a) Cl- ions, (b) Br- ions, and (c) I-ions. a) When you add AgNo3 and NH3 into the NaCl. b) All the halide ions being added to KBr. c) All the halide ions being added to Ki....
View Full Document

This note was uploaded on 01/09/2012 for the course SCIENCE 101 taught by Professor Stevens during the Spring '10 term at Aachen University of Applied Sciences.

Page1 / 2

Lab 7 halide ions - 2 Identity Ki Double unknown number 4...

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