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Explanation: As you know, carbon dioxide and silicon dioxide are isoelectronic. They are not isostructural.
Does SiO2 react with CO2?
Under ambient conditions, silica does not react with carbon dioxide (CO2). However, at high pressure and temperature, the stability of silica may be affected by CO2, which becomes supercritical fluid CO2 under extreme conditions and can percolate into the Earth’s mantle to react with silica.
What is the structure of CO2 and SiO2?
SiO2 forms a tetrahedral covalently bonded network , while CO2 is a strictly molecular compound that forms double bonds between carbon and oxygen. This is because Si is in the next period, so it has 3p orbitals instead of 2p orbitals.
What is the shape of SiO2?
Tetrahedral arrangement with one silicon bonded to four oxygen atoms. The orientation can be random, leading to an amorphous structure.
Why are the properties of CO2 and SiO2 different?
What is the Difference Between SiO2 and CO2? SiO2 is silicon dioxide, and CO2 is carbon dioxide. An important difference between SiO2 and CO2 is that the SiO2 has the tetrahedral geometry around silicon atom whereas the CO2 has the linear geometry around the carbon atom.
Is SiO2 acidic or basic?
Silicon dioxide is an acidic oxide. It will react with strong bases to form silicate salts.
What is SiO2 called?
Silica is another name for the chemical compound composed of silicon and oxygen with the chemical formula SiO2, or silicon dioxide. There are many forms of silica.
Why CO2 and SiO2 are not isostructural?
Explanation: As you know, carbon dioxide and silicon dioxide are isoelectronic. They are not isostructural. The shortness of the (first-row) C−O bonds allows effective overlap between the p -orbitals of C and O , in addition to the strong σ bond formed.
Why is CO2 gas and SiO2 solid?
The reason why carbon dioxide is a gas and silicon dioxide is a solid is because their chemical structures are different. Carbon dioxide is a linear structure with two double bonds between carbon and oxygen. It is a small molecule and non-polar with only weak bonds between the molecules. Hence it is a gas.
Which of the following property of CO2 and SiO2 is same?
Hint: Both carbon and silicon belong to the same group in the periodic table and this means that these atoms have similar properties. CO2 consists of a carbon atom which is covalently double bonded to two oxygen atoms and SiO2 or silicon dioxide is an oxide of silicon.
Is SiO2 bent or linear?
Since SiO2 has two places of electron concentration and no lone pairs, it is linear.
Is SiO2 a sp3?
Silicon dioxide has a giant molecular structure. Each silicon atom is connected to four oxygen atoms and each oxygen atom is connected to two silicon atoms, which means that sp hybridisation isn’t possible for Si. Edit: Both oxygen and silicon have four electron domains and are therefore both sp3 hybridised.
What is the generic AXE formula for SiO2?
Let’s understand it with the help of the VSEPR chart. According to the above chart, A denoted the central atom, X denoted the bonded pair and N denoted the lone pairs of electrons. So, the Generic formula of SiO2 molecular geometry is AX2.
Which has a higher melting point sio2 or CO2?
The covalent bonds of SiO2 are much stronger than weak intermolecular forces of CO2 and so take more energy to be broken, therefore the melting point of SiO2 is much higher than that of CO2 .
Why CO2 is gas but CS2 is liquid?
Question: Explain why CS2 is a liquid at room temperature while CO2 is a gas. CS2 has greater dipole moment than CO2 and thus the dipole-dipole forces in CS2 are stronger.
Is CO2 a tetrahedral?
The initial VSEPR shape for the CO2 molecule is Tetrahedral. For each multiple bond (double/triple bond), subtract one electron from the final total. The CO2 molecule has 2 double bonds so minus 2 electrons from the final total.
Is n2o3 acidic or basic?
We are asked to select the neutral oxide in this question, Option A, B and C are wrong as N2O5 , N2O3and N2O4 or NO2 are all acidic oxides. And the acidic character increases with the increase in the oxidation number. Option D N2Ois the correct answer as N2Ois a neutral oxide.
Is PBO acidic or basic?
PbO2reacts with hydrochloric acid so, it is basic. So, SiO2,GeO2, SnOand PbOare acidic, amphoteric, amphoteric, basic respectively.
Is Tl2O3 acidic or basic?
In2O3, Tl2O3 and Tl2O are basic. When a metal exists in two oxidation states, the lower oxidation state is more basic.
Why is silica bad for you?
Breathing in very small (“respirable”) crystalline silica particles, causes multiple diseases, including silicosis, an incurable lung disease that leads to disability and death. Respirable crystalline silica also causes lung cancer, chronic obstructive pulmonary disease (COPD), and kidney disease.
How is SiO2 formed?
SiO2 is the chemical compound silicon dioxide. It is formed when silicon is exposed to oxygen. It has a covalent bond and is a superior electric insulator, posessing high chemical stability. Quartz is the second most common mineral in the Earth’s continental crust.
Is SiO2 soluble in water?
Silicon dioxide has a water solubility of 0.12 g/L, whereas for example silicon carbide is water insoluble.
Is CO2 a strong acid?
CO2 is not an acid itself, since it does not contain ions of hydrogen (H+). Carbonic acid (H2CO3) is a weak, H+-splitting acid. Carbonic acid, a weak acid that acidifies the solution, is formed when some of the carbon dioxide dissolves in the water.
Which of the following is ISO structural with CO2 SO2?
A correct answer is option (C) C2H2. CO2 is a linear molecule and it is isostructural with C2H2.
What is the geometry of carbon dioxide?
Carbon dioxide has a linear molecular geometry. Carbon at the center has no lone electron pairs. The carbon is bonded to two oxygen through double bonds at 180 degree angles.
Which is solid at room temperature CO CO2?
Carbon dioxide is a gas at room temperature while silicon dioxide is a solid at room temperature with a melting point of 1770°C.
Is CO2 covalent solid?
Molecular crystals are substances that have relatively weak intermolecular binding, such as dry ice (solidified carbon dioxide), solid forms of the noble gases (e.g. argon, krypton, xenon). We conclude that Solid CO2is an example of molecular crystals. Hence, option D is correct.
Why is CO2 a gas at room temperature?
Oxygen is more electronegative than carbon. Therefore, the oxygens pull the electrons towards themselves with the same force on either side of the carbon atom. These are very weak intermolecular forces that are overcome at room temperature. Thus, carbon dioxide molecules are able to move freely as a gas.
