Class 11th

BCl → B? + Cl?
B? + H? O? BOH + H? , K? = K? /K?
0.25 – –
(0.25 – x) x
Given, pH = 2.7 = [H? ] = 2 * 10? ³
∴ x²/ (0.25) = (10? ¹? )/K?
= 4 * 10? * 4 * K? = 10? ¹?
= K? = (1/16) * 10? = 6.25 * 10? ¹?

(A) Carbon monoxide – Haemoglobin
(B) Sulphur dioxide – Stiffness of flower buds
(C) Polychlorinated biphenyls – Carcinogenic
(D) Oxides of nitrogen – Metabolized by pyrus plants

Due to I, ClO? > BrO? > IO? (stability)

Order of 1st I. E is Al < Mg < S < P

Radioactive isotope of hydrogen is tritium (³H)
Number of neutron = 3 - 1 = 2
Number of electron = 1

Correct order : Na? > Li? = Mg? > Be²?

$C{H}_4+2O_2\to C{O}_2+2H_{2}O$

2 moles of water produced by 1 mole of methane

Or 36 gm of water produced by 1 mole of CH₄

$\therefore$  81 gm of water produced = $\frac{1*81}{36}$  = 2.25 mole of CH₄

Mole of CH₄ required = 225 * 10^-2

the nearest integer = 225

C? H? + 5O? → 3CO? + 4H? O
ΔH = − {6 (C = O) + 8 (OH)} + 2 (C – C) + 8 (C – H) + 5 (O = O)
= 8a? + 5a? + 2a? - 6a? - 8a?

Cl? > F? > O? > N?
3p-3p 2p-2p B.O=2 B.O=3

Stability order :
Conjugate > Isolated > Cumulative and (y) is Anti aromatic.
HOC ∝ 1 / (Stability of Alkene)