chemistry help

I have too questions that I am having a problem with and I am wondering if someone could help me.

What ion is in excess in acidic acid solutions?

1. Cl-
2. H3O+
3. OH-
4. Hydroxide
5. hydrogen gas

A buffer functions to

1. maintain a pH of 7.0
2. maintain a neutral pH
3. maintain a fairly constant pH
4. decrease chances for survival
5. dilutes bases

The answers that I chose was b for the first question and c for the second one.
Oh, one more thing I am having a problem writing a pH for a solution with a hydrogen ion concentrating of 3.7 x 10-5
You are correct, b and c.Why don't you guess the pH and I will tell you if you are correct?

Your first 2 answers are correct.pH is equal to the negative log of the hydrogen ion concentration of a solution. I'm not going to do the math for you though.

I came up with 4.43 log(3.7*10-5)=4.43

Good job. That's what I would put too.

I agree.

How about these questions are these right?What is the correct conjugate base for H3PO4?PO4-3H2PO4-PhosphateHPO4-2Cl-I chose number 2what formula defines pH?log(H+)log(OH-)-log(H+)-log(OH-)none of the aboveI chose 3What ion is produced in basic or alkaline solutions?hydroxideOH-Hydrogenboth a&b are correctnone of the aboveI chose 4If a solution has a pH of 3.5, which statement is true?the solution is acidicthe solution is basicthe solution has excess hydroxide ionsboth b&c are correctyou could never drink a solution with a pH of 3.5I chose 1

Looks like you don't really need our help! I would agree with all your answers.

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