Inorganic Chemistry 8/8 – Flashcards
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Which of the following is NOT true for the Group 1A elements
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They are named alkaline earth metals
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Which statement about the four quantum numbers which describe electrons in atoms is INCORRECT
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L= subsidiary (or azimuthal) quantum number, l=1,2,3..., (n+1)
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If the reaction A has an activation energy of 250 kJ and the reaction B has an activation energy of 100 kJ, which of the following statements MUST be correct
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At the same temperature the rate of the reaction B is greater than the rate of reaction A
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A catalyst
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actually participates in the reaction
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The pH of a solution is 5.00. What is the concentration of hydroxide ions in this solution?
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1 x 10^-9 M
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A solution in which [H+] = 10^-8 has a pH of _____ and is _____
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8, basic
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Select the term best describing the series of elements: Mn, Fe, Co, Ni, Cu
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D-transition metals
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Which element has the LARGEST atomic radius
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Rb
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All of the following properties of the alkaline earth metals increase going down the Group EXCEPT
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First ionisation energy
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In the equation: H2O + HF =H3O+ + F-
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HF is an acid and F- is the conjugate base
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In the process known as 'roasting' a(n) ___ is chemically converted to a(n)____
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Sulfide, oxide
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A white ionic solid is dissolved in water. Addition of a solution of sodium chloride to this solution results in a white precipitate. What was the cation in the original ionic solid?
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Ag+
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Quartz, SiO2, is the most common mineral found on the surface of the earth. What is the best explanation for the fact that quartz is hard and has a high melting point?
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Quartz crystals are extended structures in which each atom forms strong covalent bonds with all of its neighboring atoms.
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Which is formed at the cathode during the electrolysis of aqueous AgNO3
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Ag(s)
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The equilibrium reaction show is endothermic as written: N2O4(g) = 2NO2(g) -Q. Which change will increase the amount of NO2 at equilibrium?
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Increasing the volume of the container.
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Of the following name/symbol combinations of elements, which one is WRONG?
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Iron/I
