Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 4

MEDIUM

JEE Advanced

IMPORTANT

Earn 100

Work out the shape of the ${BO}_{3}^{3 -}$ ion and explain why it has this structure.

Important Questions on The Group 13 Elements

HARD

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 5

Orthoboric acid may be written as

H_{3} {BO}_{3}

or

B (OH)_{3}

. How does it ionize in water and which way of writing the formula is the most helpful? How strong an acid is it? Why does glycerol enhance its acidic properties? Write a balanced equation for a neutralization reaction with boric acid.

HARD

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 6

Give an account of isopoly-acids with special reference to borates.

HARD

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 7

Give one method for the preparation of diborane,

B_{2} H_{6} .

Why is it called an electron-deficient compound? Draw the structure of diborane and give the bond lengths. What is unusual about the bonding in this compound?

HARD

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 8

How does diborane react with ammonia?

MEDIUM

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 8

How does diborane react with boron tribromide?

EASY

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 8

How does diborane react with trimethyl borane?

HARD

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 9

Describe the use of diborane in hydroboration.

HARD

JEE Advanced

IMPORTANT

Concise Inorganic Chemistry>Chapter 11 - The Group 13 Elements>Exercise 1>Q 10

Give the preparation, structure and uses of sodium borohydride.