Choose the correct answer: 1- The first known cyanine dye was a-Ethyl red. 5 Quinoline blue c-Pinacyanol 2- Sulfur dyes have a-positive charge negative charge d-No charge 3- Chloro phthalocyanines have. Poor b- Excellent c-Moderate solubility in organic solvents.

Choose the correct answer: 1- The first known cyanine dye was a-Ethyl red. 5 Quinoline blue c-Pinacyanol 2- Sulfur dyes have a-positive charge negative charge d-No charge 3- Chloro phthalocyanines have. Poor b- Excellent c-Moderate solubility in organic solvents.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Amines

Amines are organic compounds with a nitrogen atom having a lone pair of electrons on it. They are derived from ammonia (NH3) wherein hydrogen atoms are substituted by an aryl or alkyl group.

Question

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Choose the correct answer:
1- The first known cyanine dye was:
a-Ethyl red.
5 Quinoline blue
c-Pinacyanol
2- Sulfur dyes have
a-positive charge
negative charge
d- No charge
3- Chloro phthalocyanines have. ......... solubility in organic solvents.
#Poor
b- Excellent
c-Moderate

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