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Equilibrium Tes...

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  • Question 1
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    At 1400 K, $$K_c = 2.5 \times 10^{3}$$ for the reaction $$CH_4 (g) + 2H_2S \rightleftharpoons CS_2 (g) + 4H_2 (g)$$. A 10.0 L reaction vessel at 1400 K contains 2.0 mol of $$CH_4$$, 3.0 mol of $$CS_2$$, 3.0 mol of $$H_2$$ and 4.0 mol of $$H_2S$$.The reaction will proceed from right to left to reach equilibrium.

  • Question 2
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    Calculate change in concentration of $${H}^{+}$$ ion in one litre of water,when temperature changes from $$298K$$ to $$310K$$. [Given $${K}_{w}(298)={10}^{-14}, {K}_{w}(310)=2.56\times {10}^{-14}]$$.

  • Question 3
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    Assertion: The value of $${K_w}$$ increases with increase in temperature.
    Reason: Water dissociates more as temperature increases.

  • Question 4
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    Directions For Questions

    Amino acid glycine $$(NH_2 CH_2 COOH)$$ exist as a zwitterion in aqueous solution. The $$K_a$$ and $$K_b$$ value of glycine are $$1.6 \times 10^{-10}(pK_a = 9.8)$$ and $$2.5\times 10^{12}(pK_b = 11.6)$$ respectively. The $$K_a$$ and $$K_b$$ values are for zwitterion of amino acid with structure, $$[\overset {\oplus}{N}H_3 CH_3 COO^-]$$.

    ...view full instructions

    What is the $$K_b$$ for $$NH_2$$ group in glycine?

  • Question 5
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    For the reaction $$CO(g) + H_2O \:(g)\rightleftharpoons CO_2 \:(g) + H_2 \:(g)$$ at a given temperature the equilibrium amount of $$CO_2 \:(g)$$ can be increased by :

  • Question 6
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    $$C_{(s)}+H_2O_{(g)}\rightarrow CO{(g)}+H_2{(g)}$$
    The pressure on the system is increased in the above reaction then:

  • Question 7
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    Reaction $$2BaO_2(s)\rightleftharpoons 2BaO(s) + O_2 \: (g) \: ; \: \Delta H= + ve$$. At equilibrium condition, Pressure of $$O_2$$ is depends on :

  • Question 8
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    Listed in the table are forward and reverse rate constants for the reaction $$2NO (g) \rightleftharpoons N_2 (g) + O_2 (g)$$.


    Temperature (K)
    $$k_f(M^{-1}s^{-1})$$
    $$k_r(M^{-1}s^{-1})$$
    1400
    0.29
    $$1.1\times 10^{-6}$$
    1500
    1.3
    $$1.4\times 10^{-5}$$

    Is the reaction endothermic or exothermic?

  • Question 9
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    An equimolar solution of $${NaNO_2}$$ and $${HNO_2}$$ can act as a:

  • Question 10
    1 / -0

    The ionization constant of water is related to ionic product as: 

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