Name a sodium compound which is a constituent of many dry soap powders?

Academic Chemistry NCERT Class 10

Sodium carbonate decahydrate is the constituent of many dry soap powders. It is also known as washing soda (Na₂CO₃.10H₂O)

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Updated on: 10-Oct-2022

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Name the sodium compound, which is used, for softening hard water.
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Name a calcium compound which hardens on wetting with water?
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Consider the following organic compounds:CH3OH, C2H5OH, CH3COCH3, CH3COOH, C2H5COOH, C4H9COOC2H5, CH4, C2H6, CH3CHO, HCHO Out of these compounds: (a) Which compound is most likely to be sweet-smelling? (b) Which compound on treatment with conc. H2SO4 at 170°C forms an alkene? (c) Which compound on repeated chlorination forms chloroform? (d) Which compound is added to alcohol to denature it? (e) Which compound is a constituent of vinegar? (f) Which compound is used to sterilise wounds and syringes?
What is the chemical name of dry ice?
(a) Explain the process of preparation of soap in laboratory. (b) Why is common salt (sodium chloride) added during the preparation of soap? (c) Why is soap not suitable for washing clothes when the water is hard?
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A four carbons atoms containing neutral organic compound X reacts with sodium metal to evolve a gas which burns with 'pop' sound. Another four carbon atoms containing carbon compound reacts with sodium hydrogen carbonate to evolve a gas which turns lime water milky. When compounds X and Y are heated together in the presence of a little of concentrated sulphuric acid, then a new compound Z is formed.(a) What is compound X ? Also write its formula. (b) What is compound Y ? Also write its formula. (c) What is compound Z ? Also write its formula. (d) What type of smell is given by compound Z? (e) What is the general name of compounds like Z? (f) What is the general name of the reaction which takes place between X and Y to form Z?

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