Ulangan Kimia Xi Mia

When a substance containing carbon is burned completely, it produces carbon dioxide gas. This is because carbon reacts with oxygen during combustion to form carbon dioxide. Therefore, the correct answer is gas karbon dioksida (carbon dioxide gas).

Metana is the correct answer because it is the simplest hydrocarbon compound consisting of only one carbon atom bonded to four hydrogen atoms. The other options, metena, metuna, karbon monoksida, and asetilena, do not meet the criteria of being the simplest hydrocarbon with only one carbon atom.

The molecular formula C4H10 represents a saturated hydrocarbon. This is because the ratio of carbon to hydrogen atoms in the formula is 1:2, which is characteristic of saturated hydrocarbons. Additionally, the presence of 4 carbon atoms and 10 hydrogen atoms indicates that the hydrocarbon is an alkane, specifically butane.

The uniqueness of carbon atoms lies in their ability to form four covalent bonds due to having four valence electrons. This allows carbon to bond with a wide variety of other atoms, resulting in the formation of numerous compounds.

The correct answer is "mudah larut dalam pelarut polar" because it is stating a characteristic of inorganic carbon compounds. Inorganic carbon compounds are generally soluble in polar solvents due to their ionic or polar nature. This is in contrast to organic carbon compounds, which are typically insoluble in polar solvents.

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The correct answer is 3. This is because the given formula C5H12 represents pentane, which is an alkane. Alkanes are hydrocarbons with only single bonds between carbon atoms. For pentane, there are three possible isomers: n-pentane, isopentane, and neopentane. These isomers have the same molecular formula but differ in the arrangement of their carbon atoms, resulting in different chemical and physical properties. Therefore, the correct answer is 3.

The correct answer is 1,2-dimetilbutana. The reason why this is the incorrect naming of a hydrocarbon is because the numbering of the carbon atoms in the parent chain should start from the end closest to the substituents. In this case, the substituents are methyl groups attached to the second and third carbon atoms. Therefore, the correct name should be 2,3-dimetilbutana.

Bensin adalah fraksi minyak bumi yang digunakan sebagai bahan bakar dengan oktan tinggi.

The given structure is a branched hydrocarbon with multiple substituents. The first structure (i) is a straight-chain alkane with 10 carbon atoms, while the third structure (iii) is a branched alkane with 9 carbon atoms. Both structures belong to the homologous series of alkanes because they have only carbon and hydrogen atoms and follow the general formula CnH2n+2. Therefore, the correct answer is "i dan iii" (i and iii).

The correct answer is 2 because with the molecular formula C4H10, there are two possible isomers of alkane: butane and isobutane. Butane has a straight chain of four carbon atoms, while isobutane has a branched structure with three carbon atoms in a chain and one carbon atom branching off.

The correct answer is 4, 1, dan 2. In the compound 2,3-dimethylpentane, there are 4 primary carbon atoms, 1 secondary carbon atom, and 2 tertiary carbon atoms. Primary carbon atoms are bonded to only one other carbon atom, secondary carbon atoms are bonded to two other carbon atoms, and tertiary carbon atoms are bonded to three other carbon atoms.

The compounds CH3CH2CH2CH3 and (CH3)3CH are isomers of each other. Isomers are compounds that have the same molecular formula but different structural arrangements. In this case, the two compounds have the same number and type of atoms (carbon and hydrogen), but they are arranged differently. CH3CH2CH2CH3 is a straight-chain alkane, while (CH3)3CH is a branched alkane. Therefore, they exhibit isomerism.

The correct answer is "Mempunyai rumus empiris yang sama". This is because the concept of homologous series is based on compounds having the same functional group and a similar chemical structure, but with a gradual increase in the number of CH2 groups. The empirical formula represents the simplest ratio of elements in a compound, and in a homologous series, the number of CH2 groups changes, resulting in different empirical formulas for each compound.