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(A) $(i)$ Borax $(Na_2B_4O_7 \cdot 10H_2O)$ is a salt of a strong base $(NaOH)$ and a weak acid $(H_3BO_3)$,so it undergoes anionic hydrolysis to prod

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$(i), (iii)$

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(A) $(i)$ Borax $(Na_2B_4O_7 \cdot 10H_2O)$ is a salt of a strong base $(NaOH)$ and a weak acid $(H_3BO_3)$,so it undergoes anionic hydrolysis to produce an alkaline solution.$(ii)$ Potash alum $(K_2SO_4 \cdot Al_2(SO_4)_3 \cdot 24H_2O)$ is a salt of a strong acid $(H_2SO_4)$ and a weak base $(Al(OH)_3)$,resulting in an acidic solution.$(iii)$ $Na_2CO_3$ is a salt of a strong base $(NaOH)$ and a weak acid $(H_2CO_3)$,so it undergoes anionic hydrolysis to produce an alkaline solution.$(iv)$ $NH_4NO_3$ is a salt of a weak base $(NH_4OH)$ and a strong acid $(HNO_3)$,resulting in an acidic solution.Therefore,$(i)$ and $(iii)$ produce an alkaline solution.

Which of the following produce an alkaline solution when dissolved in water?
$(i)$ Borax
$(ii)$ Potash alum
$(iii)$ $Na_2CO_3$
$(iv)$ $NH_4NO_3$

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Which of the following produce an alkaline solution when dissolved in water?$(i)$ Borax$(ii)$ Potash alum$(iii)$ $Na_2CO_3$$(iv)$ $NH_4NO_3$