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Unformatted text preview: 7. Write the equilibrium constant expression for 2CrO 4 2-+ 2H + = Cr 2 O 7 2-+ H 2 O 8. Calculate the molar solubility of silver bromide (K sp = 5.2 x 10-13 ) in 0.0250 M KBr. 9. Hydrocarbons in the cab of an automobile were measured during trips on the New Jersey Turnpike and trips through the Lincoln Tunnel connecting New Jersey and Manhattan. The total concentrations (± standard deviations) of m- and p-xylene were: Turnpike: 31.4 ± 30.0 ȝ g/m 3 (32 measurements) Tunnel: 52.9 ± 29.8 ȝ g/m 3 (32 measurements) Determine the 95% confidence interval for each experiment? Does the level of xylene differ in the two tunnels at 95% confidence? Justify your answer. 10. Calculate the pH of 0.010 M HCl, 0.035 M KOH, 0.030 M HNO 3 and 3.0 M HCl....
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- Fall '10
- de vries
- Chemistry, equilibrium constant expression, net ionic reaction, New Jersey Turnpike, dilute aqueous solution