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Like other chlorosilanes or silanes, silicon tetrachloride reacts readily with water: . SiCl 4 + 2 H 2 O → SiO 2 + 4 HCl. The reaction can be noticed on exposure of the liquid to air, as SiCl 4 vapour produces fumes as it reacts with moisture to give a cloud-like aerosol of silica and hydrochloric acid. [6]
Melting point: High, since melting means breaking covalent bonds (rather than merely overcoming weaker intermolecular forces). [ 5 ] Solid-phase electrical conductivity : Variable, [ 6 ] depending on the nature of the bonding: network solids in which all electrons are used for sigma bonds (e.g. diamond, quartz) are poor conductors, as there are ...
Critical Mass (Arthur C. Clarke short story) Arthur C. Clarke: Lilliput: 1949 Crouch End (short story) Stephen King: Cthulhu Mythos anthology: 1980 Crusade (short story) Arthur C. Clarke: The Wind from the Sun: 1968 Dagon (short story) H. P. Lovecraft: The Vagrant: 1919 Dance of the Yellow-Breasted Luddites: William Shunn: Tor Books: 2000 ...
In chemistry, a formula unit is the smallest unit of a non-molecular substance, such as an ionic compound, covalent network solid, or metal. [1] [2] It can also refer to the chemical formula for that unit. Those structures do not consist of discrete molecules, and so for them, the term formula unit is used.
The stories are autobiographical episodes based on the author's experiences as a Jewish-Italian doctoral-level chemist under the Fascist regime in Italy and afterwards. They include various themes that follow a chronological sequence: his ancestry; his study of chemistry and practising the profession in wartime Italy; a pair of imaginative tales he wrote at that time, [2] and his subsequent ...
Carbon tetrachloride, also known by many other names (such as carbon tet for short and tetrachloromethane, also recognised by the IUPAC), is a chemical compound with the chemical formula CCl 4. It is a non-flammable, dense, colourless liquid with a "sweet" chloroform -like odour that can be detected at low levels.
Silicon–oxygen single bonds are longer (1.6 vs 1.4 Å) but stronger (452 vs. about 360 kJ mol −1) than carbon–oxygen single bonds. [1] However, silicon–oxygen double bonds are weaker than carbon–oxygen double bonds (590 vs. 715 kJ mol −1 ) due to a better overlap of p orbitals forming a stronger pi bond in the latter.
It decomposes above −30 °C (242 K) to sulfur dichloride and chlorine.. SCl 4 → SCl 2 + Cl 2. It hydrolyzes readily: SCl 4 + H 2 O → SOCl 2 + 2 HCl. Sulfur tetrachloride reacts with water, producing hydrogen chloride and sulfur dioxide through the hydrolysis process.
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