Freebase(0.00 / 0 votes)Rate this definition: In Australian aboriginal mythology, Wala is a sun goddess who lived with her sister, Bara, and her sister-in-law, Madalait. Bara accompanied her across the sun every day, but Wala realized she made the earth too hot and made her stop. She journeyed to the southern mountains and brought back the sun.
Generally, the lower the pH, the higher the acidity in the wine. However, there is no direct connection between total acidity and pH (it is possible to find wines with a high pH for wine and high acidity).
Orange juice is acidic despite its sweet taste. The wide array of juices you can find on grocery store shelves and in the farmers market -- or that you can make at home -- can all be categorized as acidic, alkaline or neutral, depending on their pH level. The lower the pH level is, the more acidic the juice. The acidic range on the pH scale is anything below 7, which is considered neutral. While you might associate acidic juices with a sour taste -- as with lemons and limes -- other acidic juices, such as apple and orange, are often naturally sweet despite their pH levels.