Which statement is true concerning an ideal gas? Gases behave more ideally at lo
ID: 1055366 • Letter: W
Question
Which statement is true concerning an ideal gas? Gases behave more ideally at low temperatures than at high temperatures. Polar molecules are more ideal than nonpolar molecules. Gases behave more ideally at low pressure than at high pressure. Gases behave more ideally at low pressure than at high pressure. Both statements A and B are true. Answer: () Which statement concerning solutions is FALSE? A solution is a homogenous mixture of two or more pure substances. A solution is composed of a solvent and one or more solutes. A solution has its components uniformly distributed throughout the mixture. A solution is likely to form when the solute and the solvent have similar polarities. Solutions are always liquids. Answer: () A solution contains 1.65 g of NaF in a total volume of 150.0 mL. What is its concentration expressed as % (m/V)? 0.011% 1.10% 11.0% 110% 1110% Answer: () A solution contains the label 0.2 M KNO_3. What is the correct interpretation of this concentration? There are 0.2 moles of KNO_3 in 100 ml of water. There are 0.2 g of KNO_3 in 100 mL of solution. There are 0.2 molecules of KNO_3 in 1 L of solution. There are 0.2 g of KNO_3 in 1 L of water. There are 0.2 moles of KNO_3 in 1 L of solution Answer: () Which of the following properly describes a colligative property of a solution? a solution property that depends on the identity of the solute particles present a solution property that depends on the electrical charges of the solute particles present a solution property that depends on the amount of solute particles present a solution property that depends on the pressure of the solute particles present a solution property that depends on the amount, identity, and pressure of the solute particles present Answer () A student mixes 4.0 g of KNO_3 with 5.0 mL of water at room temperature, and observes the most, but not the KNO_3 has dissolved. Which statement concerning this solution is true? The solution is considered supersaturated, since no additional KNO_3 will dissolve. The solution is considered unsaturated, since not all of the KNO_3 dissolved. The solubility of KNO_3 in water has been exceeded. KNO_3 is a water insoluble ionic compound. In order to get the additional KNO_3 to dissolve, the student can add more solute.Explanation / Answer
42.option (C) is correct.b
Generally gases behave more like ideal gas at higher temperature and lower pressure,as the P.E. due to intermolecular forces become less significant compared with the particles of Kinetic energy and size of the molecules become less significant.
43.Option (E)
Solutions are homogenous as well as heterogenous.They may be solid -solid,solid-liquid,liquid-liquid.
44.Option (C)
Concentration of the solution= 1.65×1000/150= 11.0%
45.Option (E)
Molarity= no.of moles /volume in L
M. = 0.2/1= .0.2M
46.Option(C)
Colligative properties depend only on the no. Of dissolved particles in solution and not on their identity.
47.(C)
The amount of water is less so ,we cannot talk about saturated or unsaturated.
KNO3 is an ionic compound which is soluble in water.
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