Sabtu, 01 Agustus 2009

COLLIGATIVE PROPERTIES QUIZ

1.The hormone adrenaline (C9H13NO3) is present in 6 mg per 100 mL of blood plasma. What is the molarity of adrenaline? (Ar C = 12, H = 1, O = 16, N = 14).
a)3 x 10-7
b)5 x 10-10
c)3 x 10-10
d)6 x 10-7
e)6 x 10-8
2.At 25oC, 0.0050 grams of NaCl dissolves in enough butanol (CH3CH2CH2CH2OH) to give 0.10 L of solution. What is the molarity of the solution? (Ar: Na = 23, Cl = 35.5, C = 12, H = 1, O = 16).
a)0.050
b)0.0009
c)0.009
d)0.0008
e)0.005
3.A solution for intravenous injections contains 300 mg of Na+ in 100.0 mL. What is the molarity of the ion? (Ar: Na = 23).
a)0.01
b)0.02
c)0.13
d)0.3
e)0.2
4.Determine the number of moles of solute present in 367 mL of 0.52 M NaClO3. (Ar: Cl = 35.5, O = 16, Na = 23).
a)0.14
b)0.11
c)0.19
d)0.09
e)0.21
5.Determine the number of moles of solute present in 127 mL of 0.12 M Na2SO4. (Ar: Na = 23, S = 32, O = 16).
a)0.018
b)0.027
c)0.016
d)0.024
e)0.031
6.How many moles of lithium chlorate (LiClO3) are in 153 mL of a 1.764 M solution?
a)0.340
b)0.210
c)0.270
d)0.240
e)0.310
7.How many grams of glucose are contained in 500.0 mL of 0.30 M glucose, C6H12O6, used in intravenous injection? (Ar: C = 12, H = 1, O = 16).
a)2.7
b)0.27
c)27
d)0.15
e)1.5
8.How many grams of CH3OH are required to prepare 50.0 mL of a 0.40 M solution? (Ar: C = 12, H = 1, O = 16).
a)0.80
b)0.45
c)0.64
d)0.50
e)0.32
9.Determine the mass (g) of solute required to form 275 mL of a 0.5151 M KClO4 solution. (Ar: K = 39, O = 16, Cl = 35.5).
a)8.59
b)12.2
c)19.6
d)4.21
e)1.97
10.A concentrated solution of K2CrO4 is 15.0% by weight and the density is 1.129 g/cm3. How many grams of the solution are required to prepare 200.0 mL of a 0.150M solution? (Ar: K = 39, Cr = 52, O = 16).
a)34.2
b)35.3
c)38.8
d)40.5
e)41.4
11.Concentrated HCl is 37.0% HCl by mass and has a density of 1.19 g/mL. How many grams of this solution are required to prepare 125 mL of a 1.50 M HCl solution? (Ar: H = 1, Cl = 35.5).
a)17.5
b)17.0
c)18.5
d)18.0
e)6.84
12.Concentrated HBr is 48.0% HBr by mass and has a density of 1.50 g/mL. How many grams of this solution are required to prepare 500.0 mL of a 0.600 M HBr solution? (Ar: H = 1, Br = 80).
a)24.3
b)40.2
c)50.6
d)45.4
e)54.6
13.A concentrated solution of AgNO3 is 21.9% by weight and the density is 1.220 g/cm3. How many milliliters of the solution are required to prepare 150.0 mL of a 0.200M solution? (Ar: Ag = 108, N = 14, O = 16).
a)18.1
b)17.3
c)19.7
d)20.6
e)19.1
14.A concentrated solution of (NH4)2SO4 is 36.0% by weight and the density is 1.2077 g/cm3. How milliliters grams of the solution are required to prepare 175.0 mL of a 0.120M solution? (Ar: N = 14, S = 32, O = 16, H = 1)
a)7.71
b)5.93
c)6.92
d)8.26
e)6.40
15.Concentrated HI is 47.0% HI by mass and has a density of 1.50 g/mL. How many milliliters of this solution are required to prepare 250.0 mL of a 1.50 M HI solution? (Ar: H = 1, I = 127).
a)66.4
b)102
c)62.3
d)48.0
e)68.0
16.A 25.0 mL sample of concentrated HCl (12.0 M) is diluted to a final volume of 750.0 mL. What is the molarity of the final solution? (Ar: H = 1, Cl = 35.5).
a)0.400
b)0.800
c)0.500
d)1.00
e)0.600
17.A 10.0 mL sample of concentrated HNO3 (15.8 M) is diluted to a final volume of 500.0 mL. What is the molarity of the final solution? (Ar: H = 1, N = 14, O = 16).
a)0.316
b)0.500
c)0.250
d)0.450
e)0.375
18.A 25.0 mL sample of concentrated H3PO4 (14.7 M) is diluted to a final volume of 500.0 mL. What is the molarity of the final solution? (Ar: H = 1, P = 31, O = 16).
a)0.735
b)0.765
c)0.670
d)0.795
e)0.700
19.Fluoxymesterone, C20H29FO3, is an anabolic steroid. A solution is prepared by dissolving 10.0 mg of the steroid in 500.0 microL of water. A 100.0 mL portion of this solution is diluted to a final volume of 100.0 mL. What is the resulting molarity? (Ar: C = 12, O = 16, F = 19, H = 1).
a)5.94 x 10-11
b)1.19 x 10-10
c)5.94 x 10-8
d)2.38 x 10-11
e)1.19 x 10-7
20.A solution containing Mn2+ is prepared by dissolving 1.485 g of pure manganese in nitric acid and diluting to 1.00 L. A 10.00 mL aliquot is then diluted to 500.0 mL. What is the molarity of the final solution? (Ar: Mn = 55).
a)5.06 x 10-3
b)0.0506
c)0.0253
d)5.41 x 10-4
e)2.53 x 10-4
21.A solution is prepared by dissolving 516.5 mg of oxalic acid (C2H2O4) to make 100.0 mL of solution. A 10.00 mL portion is then diluted to 250.0 mL. What is the molarity of the final solution? (Ar: C = 12, H = 1, O = 16).
a)5.737 x 10-2
b)5.737
c)2.295
d)2.295 x 10-3
e)5.738 x 10-2
22.A 10.0 mL sample of concentrated HF (16.5 M) is diluted to a final volume of 250.0 mL. What is the molarity of the final solution? (Ar: H = 1, F = 19).
a)0.570
b)0.630
c)0.690
d)0.660
e)0.600
23.What volume (mL) of 0.872 M K2CrO4 should be used to prepare 100.0 mL of a 0.125 M solution? (Ar: K = 39, Cr = 52, O = 16).
a)13.9
b)14.3
c)13.5
d)14.9
e)14.8
24.What volume (mL) of 1.57 M AgNO3 should be used to prepare 250.0 mL of a 0.200 M solution? (Ar: Ag = 108, N = 14, O = 16).
a)29.3
b)31.8
c)30.2
d)33.8
e)32.7
25.What volume (mL) of concentrated H3PO4 (14.7 M) should be used to prepare 125 mL of a 3.00 M H3PO4 solution? (Ar: H = 1, P = 31, O = 16).
a)20.0
b)25.5
c)27.5
d)22.5
e)17.5
26.A 50.0 mL sample of a 37.0% HCl solution has a density of 1.19 g/mL. The sample is diluted to a volume of 0.400 L. What is the molarity of the final solution? (Ar: H = 1, Cl = 35.5).
a)1.68
b)1.87
c)1.51
d)4.08
e)1.79
27.A 14.3 mL sample of a 15.0% solution of K2CrO4 has a density of 1.129 g/cm3. The sample is diluted to a volume of 100.0 mL What is the molarity of the final solution? (Ar: K = 39, Cr = 52, O = 16).
a)0.150
b)0.200
c)0.125
d)0.225
e)0.175
28.A 31.8 mL sample of a 21.9% solution of AgNO3 has a density of 1.220 g/cm3. The sample is diluted to a volume of 250.0 mL What is the molarity of the final solution? (Ar: Ag = 108, N = 14, O = 16).
a)0.275
b)0.225
c)0.200
d)0.175
e)0.250

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