Testing for acids and alkalis

Below are some of the ways whereby you can test for acids and alkalis.

TESTING FOR ACIDS
1. blue litmus paper - blue litmus paper turns red in acid
2. universal indicator - acids will have a pH value of less than 7
3. pH meter - acids will have a pH value of less than 7
4. carbonates - acids react with carbonates to produce carbon dioxide gas, salt and water
5. alkalis - acids react with alkalis to produce salt and water
6. metals - acids react with metals to produce hydrogen gas and salt

TESTING FOR ALKALIS
1. red litmus paper - red litmus paper turns blue in alkali
2. universal indicator - alkalis will have a pH value of more than 7
3. pH meter - alkalis will have a pH value of more than 7
4. acids - acids react with alkalis to produce salt and water
5. ammonium salt - alkalis react with ammonium salts to produce ammonia gas, salt and water