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Litmus Test

What change w...

Question

What change would you observe on adding:
1) Blue litmus solution to an aqueous solution of washing soda
2) Red litmus solution to an aqueous solution of washing soda

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Solution

1)No change
2)Red colour changes into blue

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Similar questions

What do you observe when :

(a) Blue vitriol is heated ?

(b) Washing soda is exposed to air ?

(c) Blue litmus solution is added to water ?

Q. Consider the following statements.
a. Baking soda is an acidic salt whereas washing soda is a basic salt.
b. The aqueous solution of common salt does not change the colour of either red litmus solution or blue litmus solution.
c. Amla tastes sour whereas soap solution is bitter in taste.
d. The water extract of spinach does not change the colour of blue litmus solution.
Which of the statements are correct?

Q. When a student added red litmus to an aqueous solution, the red litmus turned blue. Which one of the following should be added in excess so that the change in colour is reversed?
(1) baking soda solution
(2) lime water
(3) vinegar solution
(4) ammonia solution

Q. One student examines the properties of substance in laboratory. Aqueous solution of this substance converts blue litmus paper in to red. Identify the substance.

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What would you observe when :

(a) blue litmus is introduced into a solution of hydrogen chloride gas,

(b) red litmus paper is introduced into a solution of ammonia in water,

(c) red litmus paper is introduced in caustic soda solution?

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