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Chemistry: Estimating pH

Given the amount of hydronium (H3O+) in each solution, estimate the pH.  Then use your calculator to find the actual pH and determine whether the solution is acidic or basic.

Question Group #1
Directions and/or Common Information: The amount of hydronium [H3O+] in this solution is 0.00150 mol/L .


What is your estimate of the pH of this solution?
1. 





Using your calculator, what is the actual pH of this solution?
2. 





Is this solution acidic or basic?
3. 





Question Group #2
Directions and/or Common Information: The amount of hydronium [H3O+] in this solution is 4.50 x 10-5 mol/L .


What is your estimate of the pH of this solution?
1. 





Using your calculator, what is the actual pH of this solution?
2. 





Is this solution acidic or basic?
3. 





Question Group #3
Directions and/or Common Information: The amount of hydronium [H3O+] in this solution is 0.000950 mol/L .


What is your estimate of the pH of this solution?
1. 





Using your calculator, what is the actual pH of this solution?
2. 





Is this solution acidic or basic?
3. 





Question Group #4
Directions and/or Common Information: The amount of hydronium [H3O+] in this solution is 2.95 x 10-9 mol/L .


What is your estimate of the pH of this solution?
1. 





Using your calculator, what is the actual pH of this solution?
2. 





Is this solution acidic or basic?
3. 





Question Group #5
Directions and/or Common Information: The amount of hydronium [H3O+] in this solution is 0.0000000000713 mol/L .


What is your estimate of the pH of this solution?
1. 





Using your calculator, what is the actual pH of this solution?
2. 





Is this solution acidic or basic?
3. 





Question Group #6
Directions and/or Common Information: The amount of hydronium [H3O+] in this solution is 7.13 x 10-1 mol/L .


What is your estimate of the pH of this solution?
1. 





Using your calculator, what is the actual pH of this solution?
2. 





Is this solution acidic or basic?
3. 





Question Group #7
Directions and/or Common Information: The amount of hydronium [H3O+] in this solution is 0.0990 mol/L .


What is your estimate of the pH of this solution?
1. 





Using your calculator, what is the actual pH of this solution?
2. 





Is this solution acidic or basic?
3. 





Question Group #8
Directions and/or Common Information: The amount of hydronium [H3O+] in this solution is 1.25 x 10-13 mol/L .


What is your estimate of the pH of this solution?
1. 





Using your calculator, what is the actual pH of this solution?
2. 





Is this solution acidic or basic?
3. 





Question Group #9
Directions and/or Common Information: The amount of hydronium [H3O+] in this solution is 9.99 x 10-13 mol/L .


What is your estimate of the pH of this solution?
1. 





Using your calculator, what is the actual pH of this solution?
2. 





Is this solution acidic or basic?
3. 





Question Group #10
Directions and/or Common Information: The amount of hydronium [H3O+] in this solution is 0.00000000100 mol/L .


What is your estimate of the pH of this solution?
1. 





Using your calculator, what is the actual pH of this solution?
2. 





Is this solution acidic or basic?
3. 









G Waller

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