na2b4o7 x to h3bo3 what is x in the reaction 151032469

$$N{a_2}{B_4}{O_7} + X \to {H_3}B{O_3}.$$ What is $$X$$ in the reaction?

A. Aqueous solution of $$NaOH$$

B. Dilute nitric acid

C. Cone. $${H_2}S{O_4}$$ or $$HCl$$

D. Water

Answer : Cone. $${H_2}S{O_4}$$ or $$HCl$$

Solution :
$$N{a_2}{B_4}{O_7} + 2HCl + 5{H_2}O \to $$ $$2NaCl + 4{H_3}B{O_3}$$
$$N{a_2}{B_4}{O_7} + {H_2}S{O_4} + 5{H_2}O$$ $$ \to N{a_2}S{O_4} + 4{H_3}B{O_3}$$

Releted MCQ Question on
Inorganic Chemistry >> P - Block Elements

Releted Question 1

The reddish brown coloured gas formed when nitric oxide is oxidised by air is

A. $${N_2}{O_5}$$

B. $${N_2}{O_4}$$

C. $$N{O_2}$$

D. $${N_2}{O_3}$$

View Answer

Releted Question 2

The temporary hardness of water due to calcium carbonate can be removed by adding —

A. $$CaC{O_3}$$

B. $$Ca{\left( {OH} \right)_2}\,$$

C. $$CaC{l_2}$$

D. $$\,HCl$$

View Answer

Releted Question 3

Which of the following is most stable to heat

A. $$HCl$$

B. $$HOCl$$

C. $$HBr$$

D. $$HI$$

View Answer

Releted Question 4

White $$P$$ reacts with caustic soda. The products are $$P{H_3}$$ and $$Na{H_2}P{O_2}.$$ This reaction is an example of

A. Oxidation

B. Reduction

C. oxidation and reduction

D. Neutralisation

View Answer

$$N{a_2}{B_4}{O_7} + X \to {H_3}B{O_3}.$$ What is $$X$$ in the reaction?

Releted MCQ Question on
Inorganic Chemistry >> P - Block Elements

The reddish brown coloured gas formed when nitric oxide is oxidised by air is

The temporary hardness of water due to calcium carbonate can be removed by adding —

Which of the following is most stable to heat

White $$P$$ reacts with caustic soda. The products are $$P{H_3}$$ and $$Na{H_2}P{O_2}.$$ This reaction is an example of

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P - Block Elements

Practice More MCQ Question on Chemistry Section

$$N{a_2}{B_4}{O_7} + X \to {H_3}B{O_3}.$$ What is $$X$$ in the reaction?

Releted MCQ Question on Inorganic Chemistry >> P - Block Elements

The reddish brown coloured gas formed when nitric oxide is oxidised by air is

The temporary hardness of water due to calcium carbonate can be removed by adding —

Which of the following is most stable to heat

White $$P$$ reacts with caustic soda. The products are $$P{H_3}$$ and $$Na{H_2}P{O_2}.$$ This reaction is an example of

Practice More Releted MCQ Question on P - Block Elements

Practice More MCQ Question on Chemistry Section

Releted MCQ Question on
Inorganic Chemistry >> P - Block Elements

Practice More Releted MCQ Question on
P - Block Elements