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- (a) what would be colour of litmus in a solutionof sodium carbonate(b) Name the sodium compound which is used forsoftening hard water(w Name the gas evalued gehen acid react with metal(d) what is our teeth enamel made up of& Ant sting isin nature& write the formula of plaster of Parisg our body works with the br range ofThe pH of blood isis the bh of and rain isi chemical name of bleaching powder is |
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Answer» Answer: Hey there ! The answer for this question is as follows - a) The colour of litmus in a solution of sodium carbonate WOULD change from red to blue as sodium carbonate is basic in nature. b) The sodium compound USED for softening hard water is Hydrated Sodium carbonate Na2CO3.10H2O c) When an acod reacts with a metal , Hydrogen gas is liberated. Acid + Metal --> Metal Salt + H2 gas d) Our teeth enamel is the hardest substance in our BODY and it is a form of calcium hydroxyapatite which is a crystalline form of calcium phosphate. Ant sting contains Methanoic acid / Acetic acid which is acidic in nature. e) Plaster of Paris- CaSO4.1/2H2O ( Calcium Sulphate Hemihydrate ) * Our body works in the PH range of 7.0 to 7.8 * The PH of our blood is 7.4 * PH of acid rain should be more than 5.6 . If the PH of rain water decreses below 5.6 then it turns into acid rain which is very harmful for our environment. * Chemical name for bleaching powder - Calicum Hypochlorite HOPE this answer helps you ! Please mark it as the brainliest . |
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