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Name Date Period Acids & Bases Ws #4: pH and pOH 1. Calculate the pH for the following solutions and identify as an acid or base Ion concentration a. b. c. d. pH Acid or Base H+ 6.5 x 1011 H+.

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  3. Next, enter the date in the section labeled 'Date' to document when the form is being filled out.
  4. Proceed to the 'Period' field, where you should input the relevant period for the assignment.
  5. For question 1, calculate the pH values for the provided hydrogen ion concentrations. You can identify whether each solution is an acid or a base by the pH value calculated.
  6. In question 2, repeat the process for calculating pH based on the given hydroxide ion concentrations, and identify the solutions as acids or bases.
  7. Question 3 involves filling in a table based on additional pH values and their classifications as acids or bases. Ensure all fields are accurately filled out as per the calculations.
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Correct answer: Explanation: pH and pOH are the log concentrations of protons and hydroxide ions, respectively. The sum of pH and pOH is always 14. This is because the product of proton concentration and hydroxide concentration must always equal the equilibrium constant for the ionization of water, which is equal to .

Since the concentration of hydrogen ions H+ is more than that of pure water, the solution is acidic. Hence the substance with a pH of 4 is called an acidic substance.

Consider a solution with a pH =4.0. The [H+] of the solution would be 1.0×10−4M. Dividing Kw by this yields a [OH−] of 1.0×10−10M. Finally the pOH of the solution equals −log(1.0×10−10)=10.

A solution with a pH of 4 is moderately acidic. The strength of acids and bases is given in terms of pH. pH is a logarithmic function of the number of hydrogen atoms, The strength of acids and bases depend on the number of H+ ions present.

The pH of a weak acid generally lies in the range of 4 to 6 .

Any solution where the H+ concentration is less than 10−7, or the pH is greater than 7, would be basic. The pH range in dilute samples is from 0 (very acidic) to 14 (very alkaline), and in water samples is rarely below 4 or above 10. The measurement of pH is now almost universally done using electronic pH meters.

Key Equations pH=−log[H3O+] pOH=−log[OH−] [H3O+]=10−pH. [OH−]=10−pOH. pKw=pH+pOH=14.00 p K w = pH + pOH = 14.00 at 25 °C.

pHs less than 7 are acidic while pHs greater than 7 are alkaline (basic).

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© Copyright 1997-2025
airSlate Legal Forms, Inc.
3720 Flowood Dr, Flowood, Mississippi 39232
Form Packages
Adoption
Bankruptcy
Contractors
Divorce
Home Sales
Employment
Identity Theft
Incorporation
Landlord Tenant
Living Trust
Name Change
Personal Planning
Small Business
Wills & Estates
Packages A-Z
Form Categories
Affidavits
Bankruptcy
Bill of Sale
Corporate - LLC
Divorce
Employment
Identity Theft
Internet Technology
Landlord Tenant
Living Wills
Name Change
Power of Attorney
Real Estate
Small Estates
Wills
All Forms
Forms A-Z
Form Library
Customer Service
Terms of Service
Privacy Notice
Legal Hub
Content Takedown Policy
Bug Bounty Program
About Us
Blog
Affiliates
Contact Us
Delete My Account
Site Map
Industries
Forms in Spanish
Localized Forms
State-specific Forms
Forms Kit
Legal Guides
Real Estate Handbook
All Guides
Prepared for You
Notarize
Incorporation services
Our Customers
For Consumers
For Small Business
For Attorneys
Our Sites
US Legal Forms
USLegal
FormsPass
pdfFiller
signNow
airSlate WorkFlow
DocHub
Instapage
Social Media
Call us now toll free:
+1 833 426 79 33
As seen in:
  • USA Today logo picture
  • CBC News logo picture
  • LA Times logo picture
  • The Washington Post logo picture
  • AP logo picture
  • Forbes logo picture
© Copyright 1997-2025
airSlate Legal Forms, Inc.
3720 Flowood Dr, Flowood, Mississippi 39232