Could someone please explain in detail steps to solve the problem. Thanks! True
ID: 476989 • Letter: C
Question
Could someone please explain in detail steps to solve the problem. Thanks!
True or False:
1.
The maximum number of phases of a single substance which can coexist in equilibrium is two.
2.
All gases can be liquefied at room temperature simply by increasing the pressure on the gas.
3.
If the solid form of a pure substance is denser than its liquid form, an increase in pressure will cause the melting point to decrease.
4.
A single water molecule can participate in at most two hydrogen bonds at any instant.
5.
Only molecules which do not have dipole moments can experience dispersion forces.
6.
Electrolyte solutions generally behave less ideally as the solute concentration increases.
7.
Gases with high boiling points tend to be more soluble in water than ones with low boiling points.
8.
Heats of solution may be either positive or negative.
9.
A solution of sucrose (sugar) in water is in equilibrium with solid sucrose. If more solid sucrose is now added, with stirring the concentration of the solution will remain the same,
10.
Raoult's Law relates the vapor pressure of the solvent above the solution to its mole fraction in the solution. Raoult's Law applies exactly to all solutions
11.
Colloidal particles may be either solids, liquids, or gases.
1.
The maximum number of phases of a single substance which can coexist in equilibrium is two.
2.
All gases can be liquefied at room temperature simply by increasing the pressure on the gas.
Explanation / Answer
1.
The maximum number of phases of a single substance which can coexist in equilibrium is two. (FALSE)
reason : number of phases at equilibrium = 3
2.
All gases can be liquefied at room temperature simply by increasing the pressure on the gas. (FALSE)
reason : the gases which are having higher critical temperature those only can be liquified but not all gases
3.
If the solid form of a pure substance is denser than its liquid form, an increase in pressure will cause the melting point to decrease. TRUE
4.
A single water molecule can participate in at most two hydrogen bonds at any instant.
FALSE
reason : maximum 3 hydrogen bonds
5.
Only molecules which do not have dipole moments can experience dispersion forces.
TRUE
6.
Electrolyte solutions generally behave less ideally as the solute concentration increases.
FALSE
7.
Gases with high boiling points tend to be more soluble in water than ones with low boiling points. TRUE
8.
Heats of solution may be either positive or negative.TRUE
9.
A solution of sucrose (sugar) in water is in equilibrium with solid sucrose. If more solid sucrose is now added, with stirring the concentration of the solution will remain the same,
FALSE
10.
Raoult's Law relates the vapor pressure of the solvent above the solution to its mole fraction in the solution. Raoult's Law applies exactly to all solutions
TRUE
11.
Colloidal particles may be either solids, liquids, or gases.
TRUE
1.
The maximum number of phases of a single substance which can coexist in equilibrium is two. (FALSE)
reason : number of phases at equilibrium = 3
2.
All gases can be liquefied at room temperature simply by increasing the pressure on the gas. (FALSE)
reason : the gases which are having higher critical temperature those only can be liquified but not all gases