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Chemistry for Today: General, Organic, and Biochemistry
- Figure 14.3 shows the pH of some common solutions. How many times more acidic or basic is each of these compared with a neutral solution? (a) Milk (b) Seawater (c) Blood (d) Battery acidarrow_forwardConsider two beakers of pure water at different temperatures. How do their pH values compare? Which is more acidic? More basic? Explain.arrow_forwardA 10.0-mL sample of an HCl solution has a pH of 2.000. What volume of water must be added to change the pH to 4.000?arrow_forward
- Consider the following four solutions: (1) apple juice, pH 3.8, (2) pickle juice, pH 3.5, (3) carbonated beverage, pH 3.0, and (4) drinking water, pH 7.2. a. Which solution has the highest [H3O+]? b. Which solution has the highest [OH]? c. List the solutions in order of increasing acidity. d. List the solutions in order of decreasing basicity.arrow_forward3. A solution has a pH of 10.54. What is the hydronium ion concentration? 2.9 × 10−11 M 2.7 × 10−5 M 10.54 M 3.5 × 1010 Marrow_forwardA sample of coffee has a pH of 4.3. Calculate the hydronium ion concentration in this coffee. Is the coffee acidic or basic?arrow_forward
- A table wine has a pH of 3.40. What is the hydronium ion concentration of the wine? Is it acidic or basic?arrow_forwardDifferentiate between the terms strength and concentration as they apply to acids and bases. When is HCl strong? Weak? Concentrated? Dilute? Answer the same questions for ammonia. Is the conjugate base of a weak acid a strong base?arrow_forwardFind [H+] and the pH of the following solutions. (a) A 456-mL sample of a 12.0% (by mass) solution of HNO3(d=1.00g/mL). What is the pH of 10.0 mL of the same sample? (b) A solution made up of 1.0 g of HCI dissolved in enough water to make 1.28 L of solution. What is the pH of the solution? If the same mass of HCI is dissolved in enough water to make 128 mL of solution, what would the pH be?arrow_forward
- Which of the following substances are acids in terms of the Arrhenius concept? Which are bases? Show the acid or base character by using chemical equations. a P4O10 b Na2O c N2H4 d H2Tearrow_forwardDefine pH and explain why pH, rather than molarity, is used as a concentration measure of H3O+.arrow_forwardHow many significant figures are there in the following numbers: 10.78, 6.78, 0.78? If these were pH values, to how many significant figures can you express the [H+]? Explain any discrepancies between your answers to the two questions.arrow_forward
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