Answer to Question #71009 in General Chemistry for Rezu

Question

1.What is alicyclic compounds?
2.What do you mean by COD?
3.What is mineral?
4.Explain the Zno bisexual oxide.
5.How is the reaction of dark HNO3 with Cu?
6.What is anion?

Answer 1

1. An alicyclic compound is an organic compound that is both aliphatic and cyclic. They contain one or more all-carbon rings which may be either saturated or unsaturated, but do not have aromatic character. Alicyclic compounds may have one or more aliphatic side chains attached.
The simplest alicyclic compounds are the monocyclic cycloalkanes: cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, and so on. Bicyclic alkanes include bicycloundecane, decalin, and housane. Polycyclic alkanes include cubane, basketane, and tetrahedrane.
2. The chemical oxygen demand (COD) is an indicative measure of the amount of oxygen that can be consumed by reactions in a measured solution. It is commonly expressed in mass of oxygen consumed over volume of solution which in SI units is milligrams per litre (mg/L). A COD test can be used to easily quantify the amount of organics in water. The most common application of COD is in quantifying the amount of oxidizable pollutants found in surface water (e.g. lakes and rivers) or wastewater. COD is useful in terms of water quality by providing a metric to determine the effect an effluent will have on the receiving body much like biochemical oxygen demand (BOD).
3. A mineral is a naturally occurring chemical compound, usually of crystalline form and abiogenic in origin (not produced by life processes). A mineral has one specific chemical composition, whereas a rock can be an aggregate of different minerals or mineraloids. The study of minerals is called mineralogy. There are over 5,300 known mineral species.
4. Zinc oxide is an inorganic compound with the formula ZnO. Zinc oxide is an amphoteric oxide. It is nearly insoluble in water, but it will dissolve in most acids, such as hydrochloric acid:
ZnO + 2 HCl = ZnCl2 + H2O
Solid zinc oxide will also dissolve in alkalis to give soluble zincates:
ZnO + 2 NaOH + H2O = Na2[Zn(OH)4]
5. Cu + 4HNO3 = Cu(NO3)2 + 2NO2 + 2H2O
6. Anions are atoms or radicals (groups of atoms), that have gained electrons. Since they now have more electrons than protons, anions have a negative charge. For example, Chloride ions Cl- , Bromide Br- , Iodide I-. These are monovalent anions, meaning they have a combining capacity with only one ion of Hydrogen. Similarly there are bivalent anions.