A given white crystalline salt was tested as follows:
(a) It dissolved in water and the resulting solution of the salt turned blue litmus red.
(b) Addition of barium chloride solution into this solution gave a white precipitate.
(c) A flame test on the salt gave a persistent golden -yellow colourisation.
What conclusions can be drawn for each observation ?
Answers
Answer:
answer a:- It turns into acidic in nature because it turns into blue litmis to red.
answer B:- IT IS PRECIPITATION REACTION. BECAUSE IN THIS REACTION INSOLUBLE SUBSTANCE IS FORMED CALLED PRECIPITATE.
ANSWER C:-because the salt is 'NaCl'. it contains Na that's why it givesgolden yellow colour isation.
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a) all acidic gases turns blue litmus red.
b) since in addiction of barium chloride solution turns the solution given into white precipitate, it must contain sulphate ion or sulphite ion or carbonate ion .
c) since it produces golden yellow flame it must contain sodium ion
conclusion - the given salt might be sodium sulphate.