Which substances have an alkaline pH? Select the TWO answers that are correct.?
 battery acid
 orange juice
 drain cleaner
 baking soda
- pisgahchemistLv 76 months ago
"Alkaline pH" ........ this means the solution is basic and the pH is greater than 7
 battery acid .... for car batteries, the acid is sulfuric acid, H2SO4, not basic
 orange juice ... citric acid, not basic
 coffee ............. all kinds of stuff, but acidic, not basic
 drain cleaner .. some drain cleaners contains NaOH which IS basic, but some drain cleaners contain sulfuric acid, which is not basic.
 baking soda ....sodium bicarbonate, NaHCO3, dissolves in water to make a basic solution.
NaHCO3(s) --H2O--> NaOH(aq) + CO2(aq)
..... based on:
..... NaHCO3 --> Na+ + HCO3^-
..... HCO3^- <==> OH- + CO2
..... HCO3^- + OH- <==> H2O + CO3^2- .... but [CO3^2-] will be negligible
..... dissolving NaHCO3 will produce a collection of ions in varying concentrations: Na+ + HCO3- + OH- + CO3^2- + CO2(aq)
- ∅Lv 76 months ago
anything acidic is an acid.
anything that NEUTRALIZES acid is alkaline.
coffee and baking soda are both below 7pH, which makes them alkalinic.
- electron1Lv 76 months ago
The main ingredient in battery acid is sulfuric acid. Orange juice contains citric acid. From reading articles on face book, coffee contains weak acids. The main ingredient in drain cleaner is sodium hydroxide. This is a strong base. The formula of baking soda is Na(HCO3). This is a weak base. To prove that this is true, dissolve a spoonful of baking soda in a glass of vinegar. The following equation will occur.
HC2H3O2 + NaHCO3 → NaC2H3O2 + CO2 + H2O
The vinegar will neutralize the baking soda. This is an example of weak acid reacting with a base. I hope some of this is helpful for you.
- MarkLv 76 months ago
Drain Cleaner (very VERY alkaline)
Baking Soda (alkaline, but not so much that you have to wear gloves to touch it)
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- RobinLv 76 months ago
drain cleaner and baking soda as they are both hydroxides
- JimLv 76 months ago
Bottom two choices.