Question
Explain the molecular orbital diagram of benzene.

Answer

SELF

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Balance the following reactions by oxidation number method :
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Calcium carbonate reacts with aqueous HCl to give CaCl2 and CO2 according to the reaction, CaCO3(s) + 2 HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)
What mass of CaCO3 is required to react completely with 25mL of 0.75M HCl?
Match Column I with Column II.

S. No

Column I (Reaction)

S. No

Column II (Equilibrium constant)

1.

$2\text{N}_2(\text{g})+6\text{H}_2(\text{g})\rightleftharpoons4\text{NH}_3(\text{g})$

(i)

$2\text{K}_{\text{c}}$

2.

$2\text{NH}_3(\text{g})\rightleftharpoons\text{N}_2(\text{g})+3\text{H}_2(\text{g})$

(ii)

$\text{K}_{\text{c}}^{\frac{1}{2}}$

3.

$\frac{1}{2}\text{N}_2\text{(g)}+\frac{3}{2}(\text{g})\rightleftharpoons\text{NH}_3(\text{g})$

(iii)

$\frac{1}{\text{K}}$

4.

 

(iv)

$\text{K}^2_{\text{c}}$

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