The citric acid makes the sodium bicarbonate more soluble in water. Old chemistry trick, still used in a lot of detergents. Alka-Selter works because it contains aspirin imho. Citric acid is also used in cheesemaking.
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The AT&T VoiceMail Service, both English and Spanish, includes: 1  Greeting Length â 1 minute. 2  Message Length â 4 minutes. 3  40-message capacity.  New/saved messages stored for 30 1  days. Personal or Standard Greeting Messages.  Toll Free VoiceMail Access 1  Number. Message sending and forwarding to other AT&T VoiceMail or VoiceMail Plus subscribers.