Na2CO3⋅10H2O⟶373KNa2CO3⋅H2O+9H2ONa2CO3⋅H2O⟶>373KNa2CO3+H2OChoose the correct statement(s) :

Na 2 CO 3 ⋅ H 2 O is called soda ash

Na 2 CO 3 ⋅ 10 H 2 O is known as Glauber's salt

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${Na}_{2} {CO}_{3} \cdot 10 H_{2} O \overset{373 K}{⟶} {Na}_{2} {CO}_{3} \cdot H_{2} O + 9 H_{2} O$
${Na}_{2} {CO}_{3} \cdot H_{2} O \overset{> 373 K}{⟶} {Na}_{2} {CO}_{3} + H_{2} O$
Choose the correct statement(s) :

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${Na}_{2} {CO}_{3} \cdot H_{2} O$ is called soda ash

${Na}_{2} {CO}_{3}$ solution is alkaline due to hydrolysis of ${Na}^{+}$

${Na}_{2} {CO}_{3} \cdot 10 H_{2} O$ is known as Glauber's salt

None of the above

answer is D.

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$(a) {Na}_{2} {CO}_{3} ⟶ Soda ash$

$(b) {CO}_{3}^{2 -} + H_{2} O ⟶ {HCO}_{3}^{-} + {OH}^{-}$

$(c) {Na}_{2} {CO}_{3} \cdot 10 H_{2} O ⟶ Washing soda$

Hence, option D is correct.

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