Which of the following is the odd one out (in terms of their pH value)?

Question

Which of the following is the odd one out (in terms of their pH value)?

lemon juice
citric acid
vinegar or
baking soda?

Answer 1

lemon juice (citric acid) = 2.3, citric acid=1.5, vinegar(acetic acid) = 2.4are all acidic and will have pH below 7 , but baking soda ( NaHCO3 - sodium bicarbonate ) = 8, is basic and has a pH above 7 . So now you know which is the odd one out.

Answer 2

The lower the pH the higher the acidity. Conversely the higher the pH the more basic/alkaline the solution is. So in your question, the solution with a pH of 0 is the most acidic.

Answer 3

Baking soda.
If using blue litmus paper the others turn it red, baking soda doesn't.
baking soda in solution(water) has a pH greater than 7, alkaline; the others less than 7, acidic.

Answer 4

Baking soda is alkaline pH>7

Acids have pH<7

Answer 5

baking soda is the most likely to be the odd one as all the others are acids and it is an alkaline

Answer 6

baking soda, or sodium hydroxide is alkaline however all the rest are acidic.
vinegar is also called ethanoic acid so it is acidic as well, leaving baking soda to be the odd one out.

Answer 7

Reason it out dear...
lemon juice is ACID
citric acid is ACID
vinegar is ACID
but baking soda (if you didn't know this, you could have looked it up anywhere) is ALKALINE.

so i suppose baking soda is the odd one out ^_^

Answer 8

I would think Baking Soda since it is a base (Alkaline) and all the rest are acids (Acidic).

Answer 9

Baking soda! now mix it with vinegar and make a stinkano!

Answer 10

baking soda its the only 1 that's not acidic.