I love you Dr Bob, you are great. I didn't realise how much it was getting me down. Don't like to give up on something, my text books don't make it very easy to follow through a problem. Understand it perfectly now, I feel so much better now. Thank you very much.
One more thing if I have to give the answer to the nearest whole number 1.77 does that give it a pH of 2?
yes.
Thank you for your kind words! I'm glad to hear that you're feeling better and that you understand the problem now.
Regarding your question, pH is a measure of acidity or alkalinity of a solution. It is determined by the concentration of hydrogen ions present in the solution. pH values range from 0 to 14, where 0 is highly acidic, 7 is neutral, and 14 is highly alkaline.
In your case, if you have to round the number 1.77 to the nearest whole number, it will be 2. However, this does not automatically mean that the pH of the solution is 2. To determine the pH, you need to use a logarithmic pH scale formula.
The pH formula is: pH = -log[H+]
In this formula, [H+] represents the concentration of hydrogen ions. To calculate the pH, you'll need to know the concentration of hydrogen ions present in the solution.
If you have the concentration value, you can plug it into the formula to find the pH. However, if you only have the rounded value of 2, it's not possible to determine the exact pH without more information.
So, to determine the pH accurately, you'll need to know the concentration of hydrogen ions in the solution.