Ethyl alcohol density

Assume that you have an open-end manometer filled with ethyl alcohol (density = 0.7893 g/mL at 20°C) rather than mercury (density = 13.546 g/mL at 20°C). What is the pressure (in pascals) if the level in the arm open to the atmosphere is 55.1 cm higher than the level in the arm connected to the gas sample and the atmospheric pressure reading is 752.3 mm Hg ... 

Equal volumes of water (density 1.00 g/mL) and ethyl alcohol (density 0.789 g/mL) are combined. If the total volume is 190% of the volume of each component, what is the density of the solution ... 

Substance Melting Boiling Point (°C) Point (°C) In water In ethyl alcohol Density (g/cm )... 

A 35.0-mL sample of ethyl alcohol (density 0.789 g/mL) is added to a graduated cylinder that has a mass of49.28 g. What will be the mass of the cylinder plus the alcohol ... 

Alelting Point C C ) Boiling Point ( C ) In -ivater Jn ethyl alcohol Density (g/em )... 

A batch of 180 kg of pure ethyl alcohol (density = 0.789 kg/dm ) was stored in a container. Pumping of an aqueous solution of acetic acid (42.6 wt% acetic acid density 0.958 kg/dm ) into the container was initiated. A continuous, constant inflow of 1.8 kg/min was maintained for 120 min. The reaction temperature was 100°C. The reaction... 

When dealing with esters of water-soluble, non steam-volatile, poly-hydric alcohols e.g., ethylene glycol or glycerol), the distillate consists of water only (density 1 00). The water soluble, non-volatile alcohol may be isolated by evaporation of the alkahne solution to a thick syrup on a water bath and extraction of the polyhydric alcohol from the salt with cold ethyl alcohol. 

Alcoholometer. This hydrometer is used in determining the density of aqueous ethyl alcohol solutions the reading in degrees is numerically the same as the percentage of alcohol by volume. The scale known as Tralle gives the percentage by volume. Wine and Must hydrometer relations are given below. 

Dichloroacetic acid [79-43-6] (CI2CHCOOH), mol wt 128.94, C2H2CI2O2, is a reactive intermediate in organic synthesis. Physical properties are mp 13.9°C, bp 194°C, density 1.5634 g/mL, and refractive index 1.4658, both at 20°C. The Hquid is totally miscible in water, ethyl alcohol, and ether. Dichloroacetic acid K = 5.14 X 10 ) is a stronger acid than chloroacetic acid. Most chemical reactions are similar to those of chloroacetic acid, although both chlorine... 

A summary of physical properties of ethyl alcohol is presented ia Table 1. Detailed information on the vapor pressure, density, and viscosity of ethanol can be obtained from References 6—14. A listing of selected biaary and ternary azeotropes of ethanol is compiled ia Reference 15. 

Mercury, ethyl alcohol, and lead are poured into a cylinder. Three distinct layers are formed. The densities of the three substances are... 

H2C0, HCN, HC0+, HCC, C3N, C4H. The high density and temperature of black interstellar clouds facilitates a richer chemistry in which molecules such as dimethyl ether and ethyl alcohol are formed [1]. Figure 1 summarizes the carbon compounds which have been found in interstellar space and their abundances relative to hydrogen. Note that the carbon compounds decrease in abundance with increasing complexity. 

Common name Ethanol ETOH Chemical name Ethyl alcohol Molecular weight 46.07 Formula C2H60 Density 0.789 gmU1... 

Ethyl nitrate is produced [1] by disssolving ethyl alcohol in the cold in concentrated nitric add (density 1.41 g/cm3) free from nitrogen oxides followed by distillation of the product. 

Ammonium Monokydrogen Orthoarsenate, (NH4)2HAs04, may be prepared by the addition of ammonia to a concentrated aqueous solution of arsenic acid, the precipitate first formed being dissolved by warming and the salt then obtained either by crystallisation 6 or by precipitation with ethyl alcohol.7 The dry salt, when gently heated, loses ammonia to form the dihydrogen arsenate, as also does the aqueous solution in the cold, however, the dry salt is stable in dry air. The crystals are monoclinic prisms,8 with a b c = 0-918 1 1-1715 and j3 =91° 13 density 1-99. 

Knowing the density of a substance, particularly a liquid, can be very useful because it s often easier to measure a liquid by volume than by mass. Suppose, for example, that you needed 1.55 g of ethyl alcohol. Rather than trying to weigh exactly the right amount, it would be much easier to look up the density of ethyl alcohol (0.7893 g/mL at 20°C) and measure the correct volume with a syringe. 

A calibrated flask was filled to the 25.00 mL mark with ethyl alcohol. By weighing the flask before and after adding the alcohol, it was determined that the flask contained 19.7325 g of alcohol. In a second experiment, 25.0920 g of metal beads were added to the flask, and the flask was again filled to the 25.00 mL mark with ethyl alcohol. The total mass of the metal plus alcohol in the flask was determined to be 38.4704 g. What is the density of the metal in g/ mL ... 

As regards this method, which is among the most exact suggested, it must be painted out that a very small quantity of carbon dioxide is also formed by the oxidation of the ethyl alcohol, this quantity being practically constant and equal, under the experimental Conditions used, to o ox gram of carbon dioxide per gram of ethyl alcohol present. This amount is very small and its neglect introduces only a very small error, but in exact determinations it must be taken into account. Since the quantity of the two alcohols present may be calculated sufficiently exactly by the ordinary tables used for the determination of ethyl alcohol from the density of its solutions, the correction necessitated by the presence of ethyl alcohol may be introduced by means of the formula ... 

Methyl alcohol. Methyl alcohol may be detected by the reactions indicated on p. 254. If the aqueous solution contains only methyl alcohol, or this with small quantities of acetone (for detection of acetone, see below, paragraph 3), the amount of this alcohol in 100 grams of the varnish may be deduced from the density of the distillate (see table, Vol. I, p. 40). If ethyl alcohol (detected as in paragraph 2) also is present, the methyl alcohol is determined either colorimetrically or by combustion (see p. 258). The amount thus found is deducted from the total alcohol determined from the density of the distillate by means of the ordinary tables for ethyl alcohol, the remainder being the amount of the latter alcohol.1... 

If the distillate contains only ethyl alcohol, the amount present is given by the density. 

The densities of methyl and ethyl alcohols and of separate solutions of corresponding concentrations are very nearly equal, so that for approximate determinations the ethyl alcohol table may be used for methyl alcohol or for mixtures of the two. 

XII) Ethyl Alcohol Solution. Since LA is very sensitive, it was shipped and stored at KOW wet with not less than 20% (usually 25-27%) of a 50 0.5% (by wt) denatured alcohol (Ref 9, p 57). Alcohol served as an antifreezing agent. The compn of an ale soln can be detd from the table,density vs % ale after detg the density by means of a Leach pycnometer standardized at 25°, using the following formula ... 

Manipulation. A concentrated solution of the anhydrous rare earth chloride J in ethyl alcohol (20 to 30 g. chloroform per 100 ml. absolute ethanol) is electrolyzed using a 110-volt direct current with the cell in series with a variable resistance. The current density should not exceed 0.05 to Fig. i.—Ceil for 0.1 amp. per square centimeter in order to eaXamargam8.rare Prevent dispersion of the mercury. The solution is electrolyzed for 15 to 40 hours. Under these conditions, a liquid to pasty amalgam is obtained containing 1 to 3 per cent of rare earth metal by weight. Results of typical runs are given in the accompanying table. 

Thorium bromide is a white crystalline solid the density of which is about 5.6. It is hygroscopic and is very soluble in water and in certain organic liquids such as ethyl alcohol and ethyl acetate. It is attacked by fluorine and, when heated, by chlorine and by oxygen. On exposure to light, it is attacked by oxygen. 

Ethyl alcohol has a density of 0.79 g/mL. What volume of ethyl alcohol is needed to treat methanol poisoning, if the physician orders 200 g of ethanol ... 

Ethyl acetate (boiling point 77.1, density 0.9005, flash point -4°C) is manufactured from ethyl alcohol and acetic acid. 

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