Zadanie 14
What are the oxidation states of the elements in K2MnO4? A. K: +1, Mn: +6, O: −2 B. K: +1, Mn: +7, O: −2 C. K: +2, Mn: +4, O: −2 D. K: +1, Mn: +6, O: −1
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What are the oxidation states of the elements in K2MnO4? A. K: +1, Mn: +6, O: −2 B. K: +1, Mn: +7, O: −2 C. K: +2, Mn: +4, O: −2 D. K: +1, Mn: +6, O: −1
Which oxide reacts with water to give a solution with a pH greater than 7? A. SO2 B. P4O10 C. Al2O3 D. Na2O
Which statement is correct for the group 17 elements from chlorine to iodine? A. The first ionization energy of the elements decreases. B. The elements become stronger oxidizing agents. C. The elements become more volatile. D. The radius of the halide ion…
Aqueous nickel(II) ions, [Ni(H2O)6]2+, appear green. Which statements correctly account for this colour? I. Red light is absorbed when an electron is promoted from the lower to the higher set of split d-orbitals. II. Green light is emitted when…
Which ion is likely to form a coloured aqueous solution, based on its electron configuration? A. Ag+ B. Ti4+ C. Cd2+ D. Cr3+
Which of these alkanes boils at the lowest temperature? A. CH3CH2CH2CH2CH3 B. C(CH3)4 C. (CH3)2CHCH2CH3 D. CH3CH2CH2CH2CH2CH3
Which molecule contains a chiral centre? A. CH3CH(NH2)COOH B. (CH3)2CHCOOH C. CH3CH2CH(CH3)CH2CH3 D. ClCH2CH(OH)CH2Cl
Which of the following compounds show stereoisomerism? I. CH3CH=CHCH3 II. CH3CH(OH)CH2CH3 III. (CH3)2C=CH2 A. I and II only B. I and III only C. II and III only D. I, II and III
Which is the low-resolution NMR spectrum of methyl methanoate, HCOOCH3? A. Spectrum A B. Spectrum B C. Spectrum C D. Spectrum D
Which is the correct IUPAC name for the compound shown? A. 2-methylpent-3-enoic acid B. 4-methylpent-2-enoic acid C. 4-methylpent-3-enoic acid D. 3-methylbut-1-enoic acid