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SECTION III.

ORGANIC COMPOUNDS.

SECTION III.-ORGANIC COMPOUNDS.

INTRODUCTORY SUBJECTS.

1082. How are organic distinguished from inorganic bodies ? Give the various definitions of organic chemistry which have been proposed.

1083. Name the elements most commonly found in organic bodies. Which element is present in all organic bodies ?

1084. The compounds of carbon are more numerous than those of all the other elements.

How do you account for this?

1085. Explain the terms substitution, saturated, nonsaturated, organic radical, homologue, and hydrocarbon. Illustrate your meaning by examples.

1086. Give examples of organic and inorganic compound radicals. Give an example of an inorganic homologous series.

1087. How would you examine a substance so as to ascertain whether it is organic or inorganic ?

1088. How could you detect the presence of carbon, hydrogen, and oxygen in sugar ?

1089. How are chlorine, iodine, sulphur, and nitrogen detected in organic bodies? 1090. Describe

fully the

process employed for the quantitive analysis of an organic body containing carbon, hydrogen, and oxygen. Sketch the apparatus.

1091. Give two methods for determining the amount of nitrogen present in an organic body.

1092. How is the quantity (a) of chlorine; (6) of sulphur determined in an organic compound?

1093. Describe Frankland's process for the determination of boron in organic bodies.

1094. How much carbon is contained in each of the following weights of carbon dioxide : (a) 162769 gramme, (b) 0.8793 gramme, (c) 0:9876 gramme? How much hydrogen is contained in each of the following weights of water : (a) 247637 grammes, (b) o'2987 gramme, (c) 07896 gramme?

1095. If 4'3679 grammes of alcohol (C2H60) were

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