Answer:
E. An acid accepts a proton (hydrogen) from solution.
Step-by-step explanation:
Let's review some of its properties:
1. Aqueous solutions of acids are electrolytes, meaning that they conduct electrical current. Some acids are strong electrolytes because they ionize completely in water, yielding a great many ions.
2. Acids have a sour taste. Lemons, vinegar, and sour candies all contain acids.
3. Acids change the color of certain acid-base indicates. Two common indicators are litmus and phenolphthalein. Blue litmus turns red in the presence of an acid, while phenolphthalein turns colorless.
4. Acids react with active metals to yield hydrogen gas.
5. Acids react with bases to produce a salt compound and water.
Based on these properties, we can say that an acid is an electrolyte, an acid is able to donate protons because this substance contains a concentration of hydrogens, and an acid turn litmus paper red; so we can discard options A, B, and D.
Now, remember that some of the strong acids are hydrochloric acid (HCl), hydrobromic acid (HBr), nitric acid (HNO3), sulfuric acid (H2SO4), etc. So we can discard option C.
So the option that isn't true about acid is E. because an acid has the property of donating protons but not accepting it.
The answer is E. An acid accepts a proton (hydrogen) from solution.