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where the H 2 O byproduct is recycled via the water-gas shift reaction. CO + H 2 O → CO 2 + H 2. This gives an overall reaction CO + 2 H 2 → CH 3 OH. which is the same as listed above. In a process closely related to methanol production from synthesis gas, a feed of hydrogen and CO 2 can be used directly. [55]
This list is sorted by boiling point of gases in ascending order, but can be sorted on different values. "sub" and "triple" refer to the sublimation point and the triple point, which are given in the case of a substance that sublimes at 1 atm; "dec" refers to decomposition. "~" means approximately.
A tie line from the liquid to the gas at constant pressure would indicate the two compositions of the liquid and gas respectively. [14] A simple example diagram with hypothetical components 1 and 2 in a non-azeotropic mixture is shown at right. The fact that there are two separate curved lines joining the boiling points of the pure components ...
Ethanol-water mixtures have less volume than the sum of their individual components at the given fractions. Mixing equal volumes of ethanol and water results in only 1.92 volumes of mixture. [75] [80] Mixing ethanol and water is exothermic, with up to 777 J/mol [81] being released at 298 K. Hydrogen bonding in solid ethanol at −186 °C
It follows that the rate of formation of CH 4 is d[CH 4]/dt = k 2 [•CH 3][CH 3 CHO] = k 2 (k 1 / 2k 4) 1/2 [CH 3 CHO] 3/2. Thus the mechanism explains the observed rate expression, for the principal products CH 4 and CO. The exact rate law may be even more complicated, there are also minor products such as acetone (CH 3 COCH 3) and propanal ...
Sodium methoxide is prepared by treating methanol with sodium: 2 Na + 2 CH 3 OH → 2 CH 3 ONa + H 2. The reaction is so exothermic that ignition is possible. The resulting solution, which is colorless, is often used as a source of sodium methoxide, but the pure material can be isolated by evaporation followed by heating to remove residual methanol.
The abundance of water on the Moon's surface was inferred to be equivalent to the contents of a 12-ounce bottle of water per cubic meter of lunar soil. [9] The Chang'e 5 probe, which landed on the Moon on 1 December 2020, carried a mineralogical spectrometer that could measure infrared reflectance spectra of lunar rock and regolith. The ...
The ocean plays a key role in the water cycle as it is the source of 86% of global evaporation. [2] The water cycle involves the exchange of energy, which leads to temperature changes. When water evaporates, it takes up energy from its surroundings and cools the environment. When it condenses, it releases energy and warms the environment.