Saturday

February 28, 2015

February 28, 2015

Posted by **Erica** on Tuesday, October 10, 2006 at 1:06pm.

(a) what is the pH of the solution for which [H+] is 0.1?

(b) What happens to pH as the hydrogen ion concentration decreases?

(c)Determine the hydrogen ion concentration of an orange pH =3.8

(d) Determine the hydrogen ion concentration of human blood pH =7.4

All of these are simple log questions.

Are you having trouble with logs? For example, the answer to part (a) is just the -log(0.1).

I am. These are all log questions. And I think the main problem is how to put the question into my calculator. I am struggling the logs . Our teacher doesn't seem to teach things to our level.

For (a) use H+ = .01 in the formula to get

pH=-log10[.1] = -log10[10^-1]

For (b) you should see that the - sign before the log tells us the pH and H+ are inversely related.

For (c) set pH=3.8 in the formula and solve for H+

3.8=-log10[H+]

and for (d) 7.4=-log10[H+], so solve for H+.

**Answer this Question**

**Related Questions**

algebra 2 - The pH of a solution is given by the formula pH = -log H+ , where H...

chemistry - A ground water source contains 2.5 mg of F- ion per liter. a) what ...

osmotic pressure chemistry. - For a given mass of solute per liter of solution, ...

Chemistry - I have discovered a new chemical compound with the formula A2B. If a...

Chemistry - Suppose 49.6 mL of 0.242 M CoCl2 solution is added to 23.8 mL of 0....

AP CHEM - When 0.03 moles of lead(II) nitrate are dissolved in enough water to ...

College Algebra - The hydrogen ion concentration of a substance is related to ...

Science - 5. You have made the following two solutions: X) hydrogen ion ...

Algebra 2 - If log10^9=0.95 and log10^2=0.30, find the following: 1. log10^9/2 2...

chemistry DRBOB - Calculate the hydrogen ion concentration, in moles per liter, ...