ALL IN ONE ISC Chemistry CLASS 11>Chapter 15 - Sample Question Paper 1>SAMPLE QUESTION PAPER 1>Q 8

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IMPORTANT

Earn 100

${BCl}_{3}$ is trigonal planar while ${AlCl}_{3}$ is tetrahedral in dimeric state. Explain.

Important Questions on Sample Question Paper 1

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 15 - Sample Question Paper 1>SAMPLE QUESTION PAPER 1>Q 9

The

pH

of

0.004 M

hydrazine solution is

9.7

. Calculate it's ionisation constant

K_{b}

and

{pK}_{b}

.

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 15 - Sample Question Paper 1>SAMPLE QUESTION PAPER 1>Q 10

The equilibrium constant for a reaction is 10. What will be the value of

∆ G °

?

R = 8.314 {JK}^{- 1} {mol}^{- 1}, T = 300 K .

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 15 - Sample Question Paper 1>SAMPLE QUESTION PAPER 1>Q 10

Calculate the entropy change in surroundings when 1.00 mole of

H_{2} O (l)

is formed under standard conditions.

∆_{f} H ° = - 286 {kJmol}^{- 1}

.

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 15 - Sample Question Paper 1>SAMPLE QUESTION PAPER 1>Q 11

What are spectator ions? Give one example.

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 15 - Sample Question Paper 1>SAMPLE QUESTION PAPER 1>Q 11

Why is anode called oxidation electrode, whereas cathode is called reduction electrode ?

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 15 - Sample Question Paper 1>SAMPLE QUESTION PAPER 1>Q 11

Write the oxidation and reduction reactions separately from the following redox reaction,

$2 Fe + 2 H_{2} O + O_{2} \to 2 Fe (OH)_{2}$

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 15 - Sample Question Paper 1>SAMPLE QUESTION PAPER 1>Q 12

Explain, why is sodium less reactive than potassium ?

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 15 - Sample Question Paper 1>SAMPLE QUESTION PAPER 1>Q 12

State as to why a solution of

{Na}_{2} {CO}_{3}

is alkaline ?