Chemistry Quiz 9

Quiz 9 Acids and BaseAcids Your answer:produce H+ (or hydronium ion H3O+) in watertaste sourneutralize basesall of the aboveIn a base, Your answer:tthe [OH-] is less than the [H+]the [OH-] is equal to the [H+]the [OH-] is greater than the [H+]the [OH-] is less than 1 x 10-7 MA solution has a [H3O+] of 1 x 10-5. What is the [OH-] of the solution? Your answer:1 x 10-51 x 10-71 x 10-91 x 10-14On the pH scale, a pH of 1.5 would be Your answer:acidicvery basicbasicneutralLemonade has a [H3O+] of 1 x 10-4. What is the pH of the lemonade? Your answer:241014An ammonia solution has a [OH-] of 1 x 10-3. What is the pH of the ammonia solution? Your answer:1413113Of the following solutions, select the one that is basic: coffee pH 5.0, tomato juice pH 4.2, bleach pH 11.5, milk pH 6.4 Your answer:milktomato juicecoffeebleachWhat is the [[H3O+] of coffee if coffee has a pH of 5.0? Your answer:1 x 10-51 x 10-91 x 10-41 x 10-7A weak acid Your answer:does not dissolve in waterionizes slightly in water to give molecules and a few ionsionizes 100% in water to give all ionsdissolves in water only as moleculesKOH is a strong base because it Your answer:produces K+ and OH- ions only in waterproduces KOH, K+, and OH- ions in watergives a low pHdoes not dissolve in waterA 50.0 mL sample of a 6.0 M NaOH solution is diluted with 250 mL of water. What is the final concentration of the diluted NaOH solution? Your answer:6.0 M3.0 M1.2 M1.0 MWhen an acid neutralizes a base Your answer:a salt is producedwater is producedthe amount of H+ matches the amount of OH-all of the aboveIn this balanced neutralization equation, what is the coefficient needed for H2O? Al(OH)3 + HCl = AlCl3 + H2O Your answer:1236The product side of the balanced neutralization equation for Mg(OH)2 and HCl is Your answer:g(OH)2 + 2H2OgCl + H2OgCl2 + 2H2OgCl2 + H2OA buffer solution Your answer:maintains the pH of the solutionresists pH changes when acid or base is addedcontains a weak acid or base and its saltall of the abveQuiz 9 Acids and Bases1) Acids Correct Answer: all of the above2) In a base, Correct Answer: the [OH-] is greater than the [H+]3) A solution has a [H3O+] of 1 x 10-5. What is the [OH-] of the solution? Correct Answer: 1 x 10-94) On the pH scale, a pH of 1.5 would be Correct Answer: acidic5) Lemonade has a [H3O+] of 1 x 10-4. What is the pH of the lemonade? Correct Answer: 46) An ammonia solution has a [OH-] of 1 x 10-3. What is the pH of the ammonia solution? Correct Answer: 117) Of the following solutions, select the one that is basic: coffee pH 5.0, tomato juice pH 4.2, bleach pH 11.5, milk pH 6.4 Correct Answer: bleach8) What is the [[H3O+] of coffee if coffee has a pH of 5.0? Correct Answer: 1 x 10-59) A weak acid Correct Answer: ionizes slightly in water to give molecules and a few ions10) KOH is a strong base because it Correct Answer: produces K+ and OH- ions only in water11) A 50.0 mL sample of a 6.0 M NaOH solution is diluted with 250 mL of water. What is the final concentration of the dilu