(6) A wire of length 1.98m and another wire of length 1.99m are made up of the different material and have the same area of cross section, which wire has higher resistance? (A) The 1.99m wire has higher resistance. (B) The 1.98m wire has higher resistance. (C) Both have equal resistance. (D) The value of resistance cannot be determined from the given data. (E) Both of them are insulator.
(6) A wire of length 1.98m and another wire of length 1.99m are made up of the different material and have the same area of cross section, which wire has higher resistance? (A) The 1.99m wire has higher resistance. (B) The 1.98m wire has higher resistance. (C) Both have equal resistance. (D) The value of resistance cannot be determined from the given data. (E) Both of them are insulator.
Chapter10: Effect Of Electrolytes On Chemical Equilibria
Section: Chapter Questions
Problem 10.8QAP
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Q 6 please
Transcribed Image Text:(1) The highest molar conductivity (for 1M solution of each one):
(C) Cas
(B) AICI3
(D) NH₂OH
(A) NaCl
(E) MgF₂
(2) The molar conductivity of an acid at 0.2 M is 2.22 S.cm².mol and for same acid at infinite
dilution is 0.0111 2¹. m².mol', what is the degree of dissociation:
(C) 200
(B) 0.02
(A) 0.2
(D) 20
(E) 0.002
(3) Which of the following statements related to conductivity is incorrect:
(A) The solution can be diluted by reducing the amount of solute.
(B) The highest molar conductivity is the molar conductivity at infinite dilution.
(C) The process of splitting of the molecules into cations and anions of an electrolyte is called
ionization.
(D) There is an equilibrium in solution between molecules and their ions.
(E) If the molar conductivity is closed to A°, the equilibrium will shift to molecules.
(4) Which of the following represent the observed van't hoff factor for same concentration of KF
and CaF2, respectively?
(A) 2 and 3 (B) 1.71 and 3.71 (C) 3 and 2 (D) 1.92 and 2.91 (E) 1.72 and 2.82
(5) Which of the following statements related to electrolytes is true:
(A) A weak electrolyte exists mostly as atoms in solution.
(B) A strong electrolyte is one that decomposes completely in solution.
(C) Ethanol is an example of a weak electrolyte.
(D) KCl(s) is a strong electrolyte.
(E) A substance that ionized completely in solution is called an electrolyte.
(6) A wire of length 1.98m and another wire of length 1.99m are made up of the different
material and have the same area of cross section, which wire has higher resistance?
(A) The 1.99m wire has higher resistance.
(B) The 1.98m wire has higher resistance.
(C) Both have equal resistance.
(D) The value of resistance cannot be determined from the given data.
(E) Both of them are insulator.
(7) When 5.1 V battery is connected to 101 cm wire having cross sectional area (2.34 x 108m²)
current of 0.48 is produced, what is the resistivity (2.m):
(A) 10.625
(B) 2.46 x 10⁹
(C) 2.46 x 107
(D) 2.49 x 107
(E) 10.2
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