3. 15.0 mL of 0.50 M HCl is added to a 100.-mL sample of 0.200 M HNO2 (Ka for HNO2 = 4.0 × 10-14). What is the equilibrium concentration of NO2-ions? a) b) d) 1.1 x 10-13 M 6.5 x 10-12 M 7.5 × 10-14 M 1.7 x 10-11 M

Chemistry for Engineering Students
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Chapter12: Chemical Equilibrium
Section: Chapter Questions
Problem 12.72PAE
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15.0 mL of 0.50 M HCl is added to a 100.-mL sample of 0.200 M HNO2 (Ka for
HNO2 = 4.0 × 10-14). What is the equilibrium concentration of NO2-ions?
3.
a)
b)
1.1 x 10-13 M
6.5 x 10-12 M
7.5 x 10-14 M
1.7 x 10-11 M
none of these
Transcribed Image Text:15.0 mL of 0.50 M HCl is added to a 100.-mL sample of 0.200 M HNO2 (Ka for HNO2 = 4.0 × 10-14). What is the equilibrium concentration of NO2-ions? 3. a) b) 1.1 x 10-13 M 6.5 x 10-12 M 7.5 x 10-14 M 1.7 x 10-11 M none of these
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