If object A is placed on the pH scale at pH = 3 and object B is placed at pH = 8, which of the following must not be true?

A. Object A has a lower hydronium ion concentration than object B.
B. Object A is an acid and object B is a base.
C. Object B is closer to a neutral pH than object A.
D. Object B has a higher hydroxide ion concentration than object A.

Question

If object A is placed on the pH scale at pH = 3 and object B is placed at pH = 8, which of the following must not be true? 
    
A. Object A has a lower hydronium ion concentration than object B.
B. Object A is an acid and object B is a base.
C. Object B is closer to a neutral pH than object A.
D. Object B has a higher hydroxide ion concentration than object A.

anonymous · Answer

@nechirwan Could you help?

joannablackwelder · Answer

Acids have a higher hydronium concentration than bases.

joannablackwelder · Answer

Are you familiar with where the line is between acid and base on the pH scale?

anonymous · Answer

I'm not going to lie, this isnt my strongest subject. So, not right off the top of my head im not..

joannablackwelder · Answer

Ok, no worries. :) The line between acid and base on the pH scale is 7. Less than 7 is acidic and greater than 7 is basic.

joannablackwelder · Answer

Also, bases have a higher hydronium concentration than acids.

joannablackwelder · Answer

And neutral is at pH 7.

joannablackwelder · Answer

Using all of this info, can you try to figure out the answer?

anonymous · Answer

So, the answer would be B, correct?

joannablackwelder · Answer

B is a true statement. We are looking for a false statement.

joannablackwelder · Answer

B is true because pH 3 is less than 7 and pH 8 is greater than 7.

anonymous · Answer

Oh! right my bad, i misread the question.

joannablackwelder · Answer

No worries, that's what I thought. :)

anonymous · Answer

Would it be C?

joannablackwelder · Answer

No, C would also be true since 8 is closer to 7 than 3.

anonymous · Answer

No, thats true as well.

anonymous · Answer

I keep looking for true sorry! Idk why i keep doing that.

joannablackwelder · Answer

No worries. :) Just find all the true ones, and the last one left is the false one!

anonymous · Answer

Okay, so I'm leaning towards more A.. 
I'm not 100% on it. Its why im on here though. 
Trying to get a better understanding of all of this lol

joannablackwelder · Answer

Yep, you're right! Object A is acidic, so it would have a higher hydronium concentration! :) Great!

anonymous · Answer

Thank you so much! Could you help me on a couple other questions? I'll post them separate so you get medals. But, im trying to complete a study guide.

joannablackwelder · Answer

I can sure try! And thanks!