1 18. A solution that is 33.6 % by mass of phenol (C&HSOH) in water is prepared. What is the mole fraction of the phenol? A. 0.0969 B. 0.0643 C. 0.0883 D. 0.0604 E. 0.357 lor lo nats ri m ic o olom lpo - 19. A 1.35 m solution of NaOCI in water is prepared. What is the mole fraction of the NaOCI? A. 0,0135 B. 0.0243 C. 0.0271 D. 0.0237 E. 0.0263,o di ovlor no3 obnod algra bupil oldm tu eg i ollol o llei on da WS Lns HO snse 1 Tw bes tHOOO HD) b bnoldCTO nod n H s , 20. Determine the mass percent HCI in a 1.2 M solution of hydrochloric acid with a density of 1,019 g/mL. A. 3.0 % B. 4.3 % C. 8.6 % D. 13% E. 30. % A ylonab d obom nolor c 14 to oitl slom ad olule.21 LA3 2200 TEO L000 a,000.0Aobw 21. Oxygen gas makes up 21 % of the atmosphere by volume. What is the solubility of O2(g) in water at 25 °C if the atmospheric pressure is 741 mmHg? The Henry's law constant for oxygen gas at 25 °C is 1.3x10-3 mol/L·atm. A. 2.7x10 M B. 1.3X10°M C. 6.2X10³M D. 9.6x10³ M E. 0.96 M lo gniviozzib vd obam noinloram HO HD HOOH lo es se ale al HOCH CH OH 43 28 ot G Y sa Bea c 1 D ES 22. The vapor pressure of water at 45.0 °C is 71.93 mmHg. What is the vapor pressure of water over a solution prepared from 75.0 g of citric acid (C&H$O7) in 0.420 kg of water at this cemperature? A. 1.22 mmHg B. 42.3 mmHg C. 43.0 mmHg D. 70.7 mmHg E. 73.2 mmHg Meal M lo.1.8 M 10.0.A noimlo zis to om
1 18. A solution that is 33.6 % by mass of phenol (C&HSOH) in water is prepared. What is the mole fraction of the phenol? A. 0.0969 B. 0.0643 C. 0.0883 D. 0.0604 E. 0.357 lor lo nats ri m ic o olom lpo - 19. A 1.35 m solution of NaOCI in water is prepared. What is the mole fraction of the NaOCI? A. 0,0135 B. 0.0243 C. 0.0271 D. 0.0237 E. 0.0263,o di ovlor no3 obnod algra bupil oldm tu eg i ollol o llei on da WS Lns HO snse 1 Tw bes tHOOO HD) b bnoldCTO nod n H s , 20. Determine the mass percent HCI in a 1.2 M solution of hydrochloric acid with a density of 1,019 g/mL. A. 3.0 % B. 4.3 % C. 8.6 % D. 13% E. 30. % A ylonab d obom nolor c 14 to oitl slom ad olule.21 LA3 2200 TEO L000 a,000.0Aobw 21. Oxygen gas makes up 21 % of the atmosphere by volume. What is the solubility of O2(g) in water at 25 °C if the atmospheric pressure is 741 mmHg? The Henry's law constant for oxygen gas at 25 °C is 1.3x10-3 mol/L·atm. A. 2.7x10 M B. 1.3X10°M C. 6.2X10³M D. 9.6x10³ M E. 0.96 M lo gniviozzib vd obam noinloram HO HD HOOH lo es se ale al HOCH CH OH 43 28 ot G Y sa Bea c 1 D ES 22. The vapor pressure of water at 45.0 °C is 71.93 mmHg. What is the vapor pressure of water over a solution prepared from 75.0 g of citric acid (C&H$O7) in 0.420 kg of water at this cemperature? A. 1.22 mmHg B. 42.3 mmHg C. 43.0 mmHg D. 70.7 mmHg E. 73.2 mmHg Meal M lo.1.8 M 10.0.A noimlo zis to om
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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27
Transcribed Image Text:fraction of the phenol? A. 0.0969 B. 0.0643C. 0.0883 D. 0.0604 E. 0.357 bo AE
ovlor n tolo om so A
18. A solution that is 33.6 % by mass of phenol (C&H<OH) in water is prepared. What is the mole
C
otulor nurs ovior som micino a
rlox b oolo lo olom lapo o
- 19. A 1.35 m solution of NaOCI in water is prepared. What is the mole fraction of the
NAOCI? A. 0,0135 B. 0.0243 C. 0.0271 D. 0.0237 E. 0.0263,no diw insvlox enisnoo3
bnod olqia o
brupil oldroim ne lus on yni ollol od lie inon dar
bes H) ono
( bnoidas nod ln HO sno u
, 20. Determine the mass percent HCl in a 1.2 M solution of hydrochloric acid with a density of 1,019
g/mL. A. 3.0 % B. 4.3 % C. 8.6 % D. 13% E. 30. %
to a 82 ai 12 io gE ymvlorb d obom nolor 14 to noitl olom ad otalole).21
20320.0 TEO L0.0.8,000.0 A
a 21. Oxygen gas makes up 21 % of the atmosphere by volume. What is the solubility of O2(g) in water
at 25 °C if the atmospheric pressure is 741 mmHg? The Henry's law constant for oxygen gas at 25 °C
is 1.3x10-3 mo/L•atm. A. 2.7x10 M B. 1.3x10-³ M C. 6.2x10-³ M D. 9.6x10-³ M E. 0.96 M
lo E nivlozzib vd obsm noirulor a m HO H:OH lo m oialole o1
HOCH CH OH 13 2 ot IGL YS B C1 D 55 E
22. The vapor pressure of water at 45.0 °C is 71.93 mmHg. What is the vapor pressure of water over
a solution prepared from 75.0 g of citric acid (C&H$O7) in 0.420 kg of water at this
temperature? A. 1.22 mmHg B. 42.3 mmHg C. 43.0 mmHg D. 70.7 mmHg E. 73.2 mmHg -
Meal 1 M
M00.1 M lo.1.8 MIS0.0.A noimloz zids to viiom si zi terW
![- 23. A solution is 40.0% by mass benzene (C6H6) in carbon tetrachloride (CCI4) at 20 °C. The
vapor pressure of pure benzene and pure carbon tetrachloride at this temperature is 74.61 mmHg
and 91.32 mmHg, respectively. Calculate the vapor pressure of the solution at 20 °C:
A. 66.4 mmHg B. 73.8 mmHg C. 81.8 mmHg D. 83.0 mmHg E. 84.6 mmHg
7 24. Which of the following aqueous solutions has the highest boiling point (assume 100%
dissociation for all soluble ionic compounds)?
A. 0.10m Al(NO3)3 B. 0.11m Na2SO4 C.0.15m K>CO3 D. 0.18m NaCl E. 0.35m CH12O6
' 25. What is the freezing point of a solution prepared from 50.0 g ethylene glycol (C2H6O2) and 85.0 g
H2O? Kr of water is 1.86 °C/m. A. 17.6 °C B. 1.50 °C C. -1.50 °C D. –17.6 °C E. –176 °C
26. 0.102 g of an unknown compound dissolved in 100. mL of water has an osmotic pressure of
28.1 mmHg at 20 °C. Calculate the molar mass of the compound.
A. 727 g/mol (B. 663 g/moll C. 1.10x10² g/mol D. 1.15 g/mol E. 0.872 g/mol
r 27. Calculate the approximate freezing point of a solution made from 21.0 g NaCl and 1.00x10² g of
H2O. [Kr of water is 1.86 °C/m.] A. -13.4 °C B. -6.68 °C C. -3.59 °C D. 3,59 °C E. 6.68 °C](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8122fb3f-154a-4a78-a5bf-647e2b271c8b%2Fb59ee21e-5d5f-4fd4-80b2-94da8768ebfc%2Ff71diq_processed.jpeg&w=3840&q=75)
Transcribed Image Text:- 23. A solution is 40.0% by mass benzene (C6H6) in carbon tetrachloride (CCI4) at 20 °C. The
vapor pressure of pure benzene and pure carbon tetrachloride at this temperature is 74.61 mmHg
and 91.32 mmHg, respectively. Calculate the vapor pressure of the solution at 20 °C:
A. 66.4 mmHg B. 73.8 mmHg C. 81.8 mmHg D. 83.0 mmHg E. 84.6 mmHg
7 24. Which of the following aqueous solutions has the highest boiling point (assume 100%
dissociation for all soluble ionic compounds)?
A. 0.10m Al(NO3)3 B. 0.11m Na2SO4 C.0.15m K>CO3 D. 0.18m NaCl E. 0.35m CH12O6
' 25. What is the freezing point of a solution prepared from 50.0 g ethylene glycol (C2H6O2) and 85.0 g
H2O? Kr of water is 1.86 °C/m. A. 17.6 °C B. 1.50 °C C. -1.50 °C D. –17.6 °C E. –176 °C
26. 0.102 g of an unknown compound dissolved in 100. mL of water has an osmotic pressure of
28.1 mmHg at 20 °C. Calculate the molar mass of the compound.
A. 727 g/mol (B. 663 g/moll C. 1.10x10² g/mol D. 1.15 g/mol E. 0.872 g/mol
r 27. Calculate the approximate freezing point of a solution made from 21.0 g NaCl and 1.00x10² g of
H2O. [Kr of water is 1.86 °C/m.] A. -13.4 °C B. -6.68 °C C. -3.59 °C D. 3,59 °C E. 6.68 °C
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