Acids and Bases

A base is often referred to as:
1. an electron donor
2. a proton donor
3. an electron acceptor
4. a proton acceptor
When hydrogen reacts with bromine, it forms hydrogen bromide, which dissloves in water to make hydrobromic acid. Which one statement is correct about hydrobromic acid?
1. It's a weak acid with a pH of about 3.
2. It's a strong acid with a pH of about 1 to 2
3. It's a dilute acid
4. It's a concentrated acid
A hydrogen ion consists of:
1. a single proton
2. a single neutron
3. two hydrogen atoms, one of which has lost an electron.
4. a single electron.
Which one of these is the best description for an alkali?
1. A metal oxide
2. A metal hydroxide
3. Any base
4. A base that dissolves in water to give hydroxide ions.
In a tritration in which acid is added to an alkali, which is the best indicator to use to determine the end point?
1. Universal indicator
2. Phenolphthalein
3. Methyl orange
4. Blue litmus paper