A salt when dissolved in distilled water gives a clear solution which turns red litmus blue. Explain the phenomenon.

Academic Chemistry NCERT Class 10

Salt X (sodium carbonate, Na₂CO₃ ) is made from a strong base and a weak acid. On dissolving in water, the salt gets hydrolyzed to form some strong base and some weak acid. The strong base makes the solution alkaline and turns red litmus blue.

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Updated on: 10-Oct-2022

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What do we observe on pouring acetic acid on red and blue litmus papers?(A) Red litmus remains red and blue litmus turns red.(B) Red litmus turns blue and blue litmus remains blue.(C) Red litmus turns blue and blue litmus turns red.(D) Red litmus becomes colourless and blue litmus remains blue.
Which of the following observations is true about dilute solution of acetic acid?(a) It smells like vinegar and turns red litmus blue.(b) It smells like onion and turns blue litmus blue.(c) It smells like orange and turns red litmus blue.(d) It smells like vinegar and turns blue litmus red.
True or False:Nitric acid turns red litmus blue
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Name an indicator which is red in acid solution but turns blue in basic solution.
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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
State whether the following statements are true or false. Correct the false statements.(a) All substances are either acidic or basic.(b) A compound if acidic will turn all indicators red.(c) Lime water turns red limus blue.(d) Common salt dissolved in water turns blue litmus red.(e) Phenolphthalein is a natural indicator.(f) Calamine can be used to treat ant’s sting.(g) Lemon water is basic in nature.
Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain.

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