12. What is the proton (H*) concentration in a 25 mM solution of Sr(OH)2 ? а. 2.0 х 10-13М b. 4.0 x 10-13 М с. 0.075 М d. 0.025 M

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Chapter1: Chemical Foundations
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12. What is the proton (H*) concentration in a 25 mM solution of Sr(OH)2 ?
а. 2.0 x 10-13 М
b. 4.0 x 10-13 М
c. 0.075 M
d. 0.025 M
Transcribed Image Text:12. What is the proton (H*) concentration in a 25 mM solution of Sr(OH)2 ? а. 2.0 x 10-13 М b. 4.0 x 10-13 М c. 0.075 M d. 0.025 M
LIAmoli Ang molA0gAB
11. When a solution of silver nitrate (FW 170) is mixed with a solution of sodium chloride (FW
58.4), silver chloride (FW 143) precipitates according to the equation
Amd AgN
Imol
AgCi
143g Agci
00798malAgLI
I mo Agcl
AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
,2IL
Jow h
y mol AgCI
こ
Zg Agcı
Z= 1,14
x =,00798 mol AGNO3
y= ,00798 md agc
Assuming that the amount of sodium chloride in the mixed solution is in excess, what mass of
silver chloride can be produced from 0.21 L of a 0.038 M solution of silver nitrate?
a. 8.0 x 10-3 g
b. 0.35 g
c. D.1 g
d. 26 g
t5
12. What is the proton (H*) concentration in a 25 mM solution of Sr(OH)2 ? SlOH),→ S
c. 0.075 M
25 mmutfo
a. 2.0 x 10-13 M
b. 4.0 x 10-13 M
d. 0.025 M
I molSrets
SomalH
le.
こc
JODDX =25
2H
* 2mal #
*: 025 M
1000L
625 SreH), Y= .05
13. Which aqueous solution of the following substances is the most acidic?
a. 1.0 x 10-5 M HCI
b. neutral H2O
c. 1.0 x 10-6 M KOH
d. 1.0 x 10-$ M HF
14. A helium (He) atom and an argon (Ar) atom are traveling at the same velocity. Which one has
higher kinetic energy?
a. Не
(b, Ar
C. They have the same kinetic energy
wezhs more
Seme velost
Transcribed Image Text:LIAmoli Ang molA0gAB 11. When a solution of silver nitrate (FW 170) is mixed with a solution of sodium chloride (FW 58.4), silver chloride (FW 143) precipitates according to the equation Amd AgN Imol AgCi 143g Agci 00798malAgLI I mo Agcl AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) ,2IL Jow h y mol AgCI こ Zg Agcı Z= 1,14 x =,00798 mol AGNO3 y= ,00798 md agc Assuming that the amount of sodium chloride in the mixed solution is in excess, what mass of silver chloride can be produced from 0.21 L of a 0.038 M solution of silver nitrate? a. 8.0 x 10-3 g b. 0.35 g c. D.1 g d. 26 g t5 12. What is the proton (H*) concentration in a 25 mM solution of Sr(OH)2 ? SlOH),→ S c. 0.075 M 25 mmutfo a. 2.0 x 10-13 M b. 4.0 x 10-13 M d. 0.025 M I molSrets SomalH le. こc JODDX =25 2H * 2mal # *: 025 M 1000L 625 SreH), Y= .05 13. Which aqueous solution of the following substances is the most acidic? a. 1.0 x 10-5 M HCI b. neutral H2O c. 1.0 x 10-6 M KOH d. 1.0 x 10-$ M HF 14. A helium (He) atom and an argon (Ar) atom are traveling at the same velocity. Which one has higher kinetic energy? a. Не (b, Ar C. They have the same kinetic energy wezhs more Seme velost
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