Question 11 Which of the following reactions increase production of dihydrogen from synthesis gas-a CH4g-H 2 Og xrightarrow - Ni -1270 - K CO g -3 H - 2 g b Cs-H2Og -xrightarrow 1270 - K CO g - H - 2 g c COg-H2Og ixrightarrow-Catalyst- 673 K CO 2 g - H - 2 g dC 2 H - 6-2 H - 2 O g Xrightarrow - Ni -1270 - K 2 CO g -5 H - 2 g

(b) The process of producing syn gas or synthesis gas from coal is called 'coal gasification'. CoalC(s)+Steam H_2O(g)syn gasCO(g)+H_2(g) The production of hydro ...

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Standard XII

Chemistry

Preparation of Hydrogen

Question 11 W...

Question

Question 11

Which of the following reactions increase production of dihydrogen from synthesis gas?

$(a) C H_{4} (g) + H_{2} O (g) 1270 K - --- \to N i C O (g) + 3 H_{2} (g) (b) C (s) + H_{2} O (g) 1270 K - --- \to C O (g) + H_{2} (g) (c) C O (g) + H_{2} O (g) 673 K - ---- \to C a t a l y s t C O_{2} (g) + H_{2} (g) (d) C_{2} H_{6} + 2 H_{2} O (g) 1270 K - --- \to N i 2 C O (g) + 5 H_{2} (g)$

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Solution

(b)

The process of producing syn gas or synthesis gas from coal is called 'coal gasification'.

$C C o a l (s) + H_{2} O (g) S t e a m 1270 k - -- \to N i C O (g) + H_{2} (g)      s y n g a s$

The production of hydrogen can be increased by reacting carbon monoxide of the syn gas with steam in the presence of iron chromate as a catalyst at 673 K.

$C O (g) + H_{2} O (g) F e C r O_{4}, 673 k - ------- \to C O_{2} (g) + H_{2} (g)$

$C O_{2}$ is removed by scrubbing with a solution of sodium arsenite.

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Question 14

Which of the following reactions is an example f use of water gaas in the synthesis of other compounds?

$(a) C H_{4} (g) + H_{2} O (g) 1270 K - --- \to N i C O (g) + H_{2} (g) (b) C O (g) + H_{2} O (g) 673 K - ---- \to C a t a l y s t C O_{2} (g) + H_{2} (g) (c) C_{n} H_{2 n + 2} + n H_{2} O (g) 1270 k - -- \to N i n C O + (2 n + 1) H_{2} (d) C O (g) + 2 H_{2} (g) C o b a l t - ---- \to C a t a l y s t C H_{3} O H (l)$

Q. Consider the reactions

(i) C O (g) + H_{2} O (g) ⇌ C O_{2} (g) + H_{2} (g); K_{1} (i i) C H_{4} (g) + H_{2} O (g) ⇌ C O (g) + 3 H_{2} (g); K_{2} (i i i) C H_{4} (g) + 2 H_{2} O (g) ⇌ C O_{2} (g) + 4 H_{2} (g); K_{3}

which of the following is correct?

$C_{2} H_{4} + H_{2} N i / P d - --- \to C_{2} H_{6}$ ,

name of this reaction is:

C_{2} H_{6} s u n l i g h t - ----- \to {1 M o l e C l}_{2} A a l c . K O H - ----- \to B 200^{0} C - --- \to H_{2} / N i C

Here ‘C’ is :

Q. Predict the effect upon the following reaction equilibria of increased pressure.

(1) H_{2} O (g) ⇌ H_{2} (g) + \frac{1}{2} O_{2} (g) (2) C a C O_{3} (s) ⇌ C a O (s) + C O_{2} (g) (3) C (s) + H_{2} O (g) ⇌ H_{2} (g) + C O (g)

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