Question # 1

The ph of 10-3 mole dm-3 of an aqueous solution of H₂SO₄ is :

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3.0

2.7

2.0

1.5

An excess of aqueous silver nitrate is added to aqueous barium chloride and precipitate is removed by filtration. What are the main ions in the filtrate

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The correct relation b/wK_{c and}K_{p is :}

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K_p = K_c[P/N] ^Δn

K_{c =}K_p(RT) ^Δn

K_{p =}K_c(RT) ^Δn

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450°C

250°C

850°C

1000°C

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32

64

16

4

pH and pKa of the buffer are related by Henderson equation which is

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A buffer of a 0.09 molar acetic acid and 0.11 molar sodium acetate has pH = 4.83. If 0.01 mole NaOH in 1 dm³of the buffer solution is added, then pH of the buffer becomes

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4.74

4.92

5.0

4.0

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Favour the formation of N₂O₄

Favour the decomposition of N₂O₄

Not alter the equilibrium

Stop the reaction

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0.02

0.2

50

25

The rate of forward reaction is two times that of the reverse reaction at a given temperature and identical concentration, K equilibrium is

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0.5

1.5

2.5

2.0

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ECAT Chemistry Chapter 8 Chemical Equilibrium Online Test MCQs With Answers

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