Which of the following produce an alkaline so | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(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 $NaOH$

Vedclass · Accepted Answer

Only $(i)$

Vedclass · Answer

(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.

Column-$I$	Column-$II$
$A$. Diborane	$1$. Used as a flux for soldering metals
$B$. Gallium	$2$. Crystalline form of silica
$C$. Borax	$3$. Banana bonds
$D$. Alumino silicate	$4$. Low melting,high boiling,useful for measuring high temperatures
$E$. Quartz	$5$. Used as catalyst in petrochemical industries

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

Similar Questions

Explain the following:
$(1)$ Aluminum forms $[AlF_6]^{3-}$ ion but boron does not form $[BF_6]^{3-}$ ion.
$(2)$ $PbX_2$ is more stable than $PbX_4$.

Which one of the following is the correct statement?

Consider the following halides: $(1) \; BCl_3$,$(2) \; AlCl_3$,$(3) \; GaCl_3$,$(4) \; InCl_3$. What is the decreasing order of their Lewis acid strength?

Boron fluoride exists as $BF_3$ but boron hydride does not exist as $BH_3$. Give reason. In which form does it exist? Explain its structure.

Vedclass Test Series

Exam Paper Generator

Online Exam Module

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