(a) Describe how washing soda is produced starting from sodium chloride (common salt). Write equations
of all the reactions involved.
(b) State whether an aqueous solution of washing soda is acidic or alkaline ? Give reason for your answer.
(c) What is meant by saying that washing soda has detergent properties ?
(d) Give two important uses of washing soda (or sodium carbonate).
Lakhmir Singh Chemistry Class 10
Answers
Answered by
45
a. Na2co3
nacl + nh3+ co2+ h2o ---- nh4cl +nahco3
nahco3 ------- na2co3 +H2o +co2
Na2co3 + 10 h2o -----na2co3.10 h2o
2. it dissolve in water to form alkaline it is soluble in soluble which turn red litmus solution blue
3. because of loss of water of crystallization from hydrated salt to the atmosphere on it expose to Air
4. it is used for softening of hard water. it is used for removing permanent hardness
it is used in textile industry and also petroleum
nacl + nh3+ co2+ h2o ---- nh4cl +nahco3
nahco3 ------- na2co3 +H2o +co2
Na2co3 + 10 h2o -----na2co3.10 h2o
2. it dissolve in water to form alkaline it is soluble in soluble which turn red litmus solution blue
3. because of loss of water of crystallization from hydrated salt to the atmosphere on it expose to Air
4. it is used for softening of hard water. it is used for removing permanent hardness
it is used in textile industry and also petroleum
Answered by
10
Answer:
Explanation:
Na2co3. H20
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