Take distilled water or rain water in 3 test tubes add two drops of hydrochloric acid solution to one test - Science - Water

Question

Take distilled water or rain water in 3 test tubes add two drops of
hydrochloric acid solution to one test tube and add two drops of
sodium hydroxide solution in another one Dip small piece of pH
paper,blue litmus paper and red litmus paper in all three test
tubes what happen to the test tubes after the expirement

Nishtha Sinha · Answer

using red litmus
1 Test tube with hydrochloric acid - no change
2 ​Test tube with sodium hydroxide-change into blue
colour
3 ​Test tube with distilled water-no change

using blue litmus
1 ​Test tube with hydrochloric acid-change into red
colour
2 Test tube with sodium hydroxide- no change
3 ​Test tube with distilled water-no change