Which of the following produce an alkaline so | vedclass

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(D) Borax $(Na_2B_4O_7 \cdot 10H_2O)$ undergoes hydrolysis in water to form $NaOH$ (a strong base) and $H_3BO_3$ (a weak acid). The presence of $NaOH$

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Only $(i)$

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(D) Borax $(Na_2B_4O_7 \cdot 10H_2O)$ undergoes hydrolysis in water to form $NaOH$ (a strong base) and $H_3BO_3$ (a weak acid). The presence of $NaOH$ makes the solution alkaline.$(i)$ Borax: $Na_2B_4O_7 + 7H_2O \longrightarrow 2NaOH + 4H_3BO_3$ (Alkaline).$(ii)$ Potash alum $(K_2SO_4 \cdot Al_2(SO_4)_3 \cdot 24H_2O)$ is acidic in water due to the hydrolysis of $Al^{3+}$ ions.$(iii)$ $SO_2$ reacts with water to form sulfurous acid $(H_2SO_3)$,which is acidic.$(iv)$ $SO_2(OH)_2$ is sulfuric acid $(H_2SO_4)$,which is strongly acidic.Therefore,only $(i)$ produces an alkaline solution.

Which of the following produce an alkaline solution when dissolved in water?
$(i)$ Borax
$(ii)$ Potash alum
$(iii)$ $SO_2$
$(iv)$ $SO_2(OH)_2$

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Which of the following produce an alkaline solution when dissolved in water?$(i)$ Borax$(ii)$ Potash alum$(iii)$ $SO_2$$(iv)$ $SO_2(OH)_2$