The equilibrium system not affected by the pressure change which results from a volume change at eonstant temperature is (A) 2 O3(g)= 3 Oz(g) (B) PCl(g) =PCI3(g) + Cl2(g) (C) H2(g) + I(g) 2 HI(g) (D) 2 NO2(g) = N2O(g)

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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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19. Determine the pH of a 0.10 M
solution of a base, B, with a K of
1.0 x 105
(A) 3.00
(B) 6.00
(C) 8.00
(D) 11.00
20. Isotopic forms of the same element
(A) differ in the number of neutrons
(B) are formed by gaining electrons
(C) always have a positive charge
(D) have the same number of
neutrons
21. The number of moles of oxygen
atoms in one mole of iron(II)
phosphate is
(A) 2
(B) 3
(C) 4
(D) 8
16. The equilibrium system not affected
by the pressure change which results
from a volume change at éonstant
temperature is
(A) 2 O3(g) = 3 Oz(g)
(B) PCI:(g) = PCla(g) + Cla(g)
(C) H2(g) + L(g) 2 HI(g)
(D) 2 NO2(g) N2O(g)
22. Magnesium fluoride, a salt of low
solubility in water, has a Kp of 6.4 x
10. The concentration of Mg* ions
in this solution would be
(A) V6.4x10 M
(B) (6.4x10 / 2)M
(C) (6.4x 10 /3)M
(D) (6.4x10 /4)M
17. A solution of 50.0 mL of 0.0010 M
Ba(OH)2 is slowly titrated with 50.0
mL of 0.0030M H2SO.. The
conductivity of this solution will
(A) decrease to near zero, then
increase
(B) decrease to near zero and remain
very low
(C) increase as the acid is added then
become constant at a high value
(D) increase as the acid is added and
then slowly become very low
18. Which of the following pairs
illustrates the law of multiple
proportions?
(A) SO2, SO
(B) CO2, CCL
(C) NaCl, NaBr
(D) NH,CI, NH,Br
Transcribed Image Text:19. Determine the pH of a 0.10 M solution of a base, B, with a K of 1.0 x 105 (A) 3.00 (B) 6.00 (C) 8.00 (D) 11.00 20. Isotopic forms of the same element (A) differ in the number of neutrons (B) are formed by gaining electrons (C) always have a positive charge (D) have the same number of neutrons 21. The number of moles of oxygen atoms in one mole of iron(II) phosphate is (A) 2 (B) 3 (C) 4 (D) 8 16. The equilibrium system not affected by the pressure change which results from a volume change at éonstant temperature is (A) 2 O3(g) = 3 Oz(g) (B) PCI:(g) = PCla(g) + Cla(g) (C) H2(g) + L(g) 2 HI(g) (D) 2 NO2(g) N2O(g) 22. Magnesium fluoride, a salt of low solubility in water, has a Kp of 6.4 x 10. The concentration of Mg* ions in this solution would be (A) V6.4x10 M (B) (6.4x10 / 2)M (C) (6.4x 10 /3)M (D) (6.4x10 /4)M 17. A solution of 50.0 mL of 0.0010 M Ba(OH)2 is slowly titrated with 50.0 mL of 0.0030M H2SO.. The conductivity of this solution will (A) decrease to near zero, then increase (B) decrease to near zero and remain very low (C) increase as the acid is added then become constant at a high value (D) increase as the acid is added and then slowly become very low 18. Which of the following pairs illustrates the law of multiple proportions? (A) SO2, SO (B) CO2, CCL (C) NaCl, NaBr (D) NH,CI, NH,Br
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