Scientists use the pH scale to represent the level of acidity or alkalinity of a liquid. This is based on the molar concentration of hydrogen ions, [H+]. Since the values of [H+] vary over a large range, 1 × 100 mole per liter to 1 x 10-14 mole per liter (mol/L), a logarithmic scale is used to compute pH. The formula pH = -log[H*] represents the pH of a liquid as a function of its concentration of hydrogen ions, [H+]. The pH scale ranges from 0 to 14. Pure water is taken as neutral having a pH of 7. A pH less than 7 is acidic. A pH greater than 7 is alkaline (or basic). For Exercise, use the formula for pH. Round pH values to 1 decimal place. Lemon juice Wine Ammonia Bleach 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 pH 100 10-2 10-4 10-7 10-10 10-12 10-14 [H+] Water Acidic Alkaline (neutral) Bleach and milk of magnesia are both bases. Their [H+] values are 2.0 x 10-13 mol/L and 4.1 x 10-10 mol/L, respectively. a. Find the pH for bleach. b. Find the pH for milk of magnesia. c. Which substance is more basic?

Scientists use the pH scale to represent the level of acidity or alkalinity of a liquid. This is based on the molar concentration of hydrogen ions, [H+]. Since the values of [H+] vary over a large range, 1 × 100 mole per liter to 1 x 10-14 mole per liter (mol/L), a logarithmic scale is used to compute pH. The formula pH = -log[H*] represents the pH of a liquid as a function of its concentration of hydrogen ions, [H+]. The pH scale ranges from 0 to 14. Pure water is taken as neutral having a pH of 7. A pH less than 7 is acidic. A pH greater than 7 is alkaline (or basic). For Exercise, use the formula for pH. Round pH values to 1 decimal place. Lemon juice Wine Ammonia Bleach 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 pH 100 10-2 10-4 10-7 10-10 10-12 10-14 [H+] Water Acidic Alkaline (neutral) Bleach and milk of magnesia are both bases. Their [H+] values are 2.0 x 10-13 mol/L and 4.1 x 10-10 mol/L, respectively. a. Find the pH for bleach. b. Find the pH for milk of magnesia. c. Which substance is more basic?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

人工知能を使用せず、すべてを段階的にデジタル形式で解決してください。ありがとう SOLVE STEP BY STEP IN DIGITAL FORMAT DON'T USE CHATGPT 2. Determine the concentration of hydrogen ions and hydroxide ions of the following solutions if known: a) pH= 1.5 b) pH = 2.2 c) pOH = 8.8 d) pOH = 9.5
O Microsoft O shift V A chemistry student weighs out 0.0608 g of formic acid (HCHO₂) into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1400M NaOH solution. OCHEMICAL REACTIONS Determining the volume of base needed to titrate a given mass... Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits. W Microsoft Microsoft 6.52.210... tab esc caps lock mL control Explanation ! 1 (8) Q A Check N © 2 W S #3 X T option command E x10 X D NOV 14 $ 4 C R S F do L % 5 V T G tv ♫ 6 MacBook Pro 9 Y & 7 H Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility U 8 1 9 BN M A O J K O O JOD 05 L H W P > { I command option DOCX + 11 ? | 1 9 OC
-3 Calculate the concentration of OH ions in a 6.70 × 107 M HCl solution. Be sure your answer has the correct number of significant digits. Note: Reference the Fundamental constants table for additional information. [OH-] = 1.49 × 10 M x10 X Ś
Balance the following equation by filling the gaps with appropriate numbers. OHg + OHCI + OHg, + OH2
Determine the pH of a 7.98 × 103 M Ca(OH)2 solution. Your answer should contain 3 decimal places as this corresponds to 3 significant figures when dealing with logs. pH =
// IN B R tion 8 of 25 2 NaCl(aq) + K, S(aq) → Na, S(aq) + 2 KCI(aq) (3)°0E + (s)1D – (s)*(*01) O acid-base neutralization O acid-base neutralization O precipitation O precipitation xopə1 O none of these reaction types хораг none of these reaction types KOH(aq) + AgNO, (aq) KNO, (aq)+A£OH(s) CaO(s) + CO,(g) → CACO3(s) → CaCO,(s) O acid-base neutralization O acid-base neutralizatin O precipitation O precipitation хорәл none of these reaction types xopə1 O O none of these reaction types Ba(OH), (aq) +2 HNO, (aq) Ba(NO,),(aq) + 2 H,O(I) O acid-base neutralization O precipitation MacBook Pro Q Search or enter website name | & %24 4 %23 7. 5. 6. { 3. E. K. C.
Fill in the blanks by doing the necessary calculations with the information provided. a) pH = 12.3 [H+] = _______________ b) [OH-] = 2.29 x 10-11 [H+] = __________ c) [H+] = 4.07 x 10-7 pH = __________ d) [H+] = 9.93 x 10-4 pOH = ____________
Chemistry I need answers to both questions please Calculate the hydronium ion concentration in an aqueous solution of 0.191 M carbonic acid, H2CO3 (aq). [H30*] = M. Calculate the concentration of HCO3 in an aqueous solution of 0.1340 M carbonic acid, H2CO3 (aq). [HCO3 ] = М.
Calculate the concentration of OH ions in a 1.00 × 103 M HCl solution. Be sure your answer has the correct number of significant digits. Note: Reference the Fundamental constants table for additional information. [он ]= м
Human saliva contains enzymes that start the process of digestion. Human saliva typically has a hydroxide ion concentration of 1.2 x 10-8 mol/L. Determine the pOH of saliva. Do not show your work. Record only your final answer with the correct number of significant digits. Remember, pOH does not have units! Human blood is slightly basic. Calculate the hydroxide ion concentration in a sample of blood with a pOH of 6.55 You MUST show your work. Record your answer in scientific notation with the proper number of significant digits and proper units.
Please complete the calculations related to pH, pOH, [H3O+], and [OH-]. Remember there are special rules related to significant digits when working with pH, pOH, [H3O+], and [OH-]. A sample of household vinegar was measured to have a hydronium ion concentration of 5.8 x 10-3mol/L. Determine the pH of the sample. Hand soap is effective at preventing bacterial contamination. Calculate the hydronium ion concentration in a brand of hand soap with a pH of 10.1Human saliva contains enzymes that start the process of digestion. Human saliva typically has a hydroxide ion concentration of 1.2 x 10-8 mol/L. Determine the pOH of saliva. Human blood is slightly basic. Calculate the hydroxide ion concentration in a sample of blood with a pOH of 6.55
For the questions of Exp. 13, calculate how many volume (mL) of 1.00 x 10-2 M, Ba(OH) 2 (aq) would be needed to neutralize 29.9 mL of 1.00 x 10-2 M, H3PO4 (aq). Type your answer...