For litmus, it so happens that the 50 / 50 colour does occur at close to pH 7 - that's why litmus is commonly used to test for acids and alkalis. As you will see below, that isn't true for other indicators. Methyl orange. Methyl orange is one of the indicators commonly used in titrations. In an alkaline solution, methyl orange is yellow and the structure is: Now, you might think that when you add an acid, the hydrogen ion would be picked up by the negatively charged oxygen. That's the obvious place for it to go.
Ankle sprain: Types list. The list of types of Ankle sprain mentioned in various sources includes: 1  Anterior talofibular ligament sprain - most common. 2  Calcaneofibular ligament sprain - second most common.  Inversion injury - from the foot turning inward.
Ankle sprains usually occur as a result of a sudden twisting or rolling action of the ankle and this can be from either contact (tackles) or non-contact situations. The most common structures that are damaged in sprained ankles are the lateral ligaments (which joint bone to bone) on the outside of the ankle, however tendons (join muscles to bone), muscles, nerves and bones can also be injured.