What is simple buffer? Give an example and also explain its mecha… - Vidyadip

Question

What is simple buffer? Give an example and also explain its mechanism.

✓

Answer

SELF

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "5 Marks Questions" from PART - 1 CH - 6 Equilibrium→PART - 1 CH - 6 Equilibrium — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Explain the Liebig's combustion process for analysis of carbon and hydrogen.

Following results are observed when sodium metal is irradiated with different wavelengths. Calculate (a) threshold wavelength and (b) Planck's constant.

$\lambda( nm )$	500	450	400
$v \times 10^{-8}\left(cm s ^{-1}\right)$	2.55	4.35	5.35

→

Draw a diagram of bubble plate type fractionating column. When do we require such type of a column for separating two liquids. Explain the principle involved in the separation of components of a mixture of liquids by using fractionating column. What industrial applications does this process have?

How much energy is required to ionise a H atom if the electron occupies n = 5 orbit? Compare your answer with the ionization enthalpy of H atom (energy required to remove the electron from n = 1 orbit).

Use the following reactions to arrange the elements A, B, C and D in order of their redox reactivity:

A + B⁺ → At + B
B + D⁺ → B⁺ +D
C⁺ + D → No reaction
B⁺C⁺ → B⁺ + C

On the basis of above redox activity series, predict which of the following reactions would you expect to occur?

A⁺ + C → A⁺ C⁺
A⁺ + D → A⁺ D⁺

1. Suggest a method to purify
i. a liquid which decomposes at its boiling point.
ii. kerosene oil containing water.
iii. camphor containing traces of common salt.
2. Giving justification, categorise the following molecules/ions as nucleophile or electrophile:
$
\begin{aligned}
& HS^{-}, BF_3, C_2 H_5 O^{-},\left(CH_3\right)_3 N:, \\
& C \stackrel{+}{l}, C H_3-\stackrel{+}{C}=O, H_2 N \stackrel{+}{:}, \stackrel{+}{N} O_2
\end{aligned}
$

How do atomic radius vary in a period and in a group? How do you explain the variation?

A mixture of 1.57 mol of N₂, 1.92 mol of H₂ and 8.13 mol of NH₃ is introduced into a 20L reaction vessel at 500K. At this temperature, the equilibrium constant, K_c for the reaction $\text{N}_2\text{ (g) + }3\text{H}_2\text{ (g)}\rightleftharpoons2\text{NH}_3\text{ (g) is }1.7\times10^2.$ Is the reaction mixture at equilibrium? If not, what is the direction of the net reaction?

Represent the potential energy/enthalpy change in the following processes graphically.

Throwing a stone from the ground to roof.
$\frac{1}{2}\text{H}_2(\text{g})+\frac{1}{2}\text{Cl}_2(\text{g})\rightleftharpoons\text{HCl}(\text{g})$ $\Delta_\text{r}\text{H}^\ominus=-92.32\text{kJ}\ \text{mol}^{-1}$

In which of the processes potential energy/enthalpy change is contributing factor to the spontaneity?

Match the correct ionisation enthalpies and electron gain enthalpies of the following elements:

	Elements		$\Delta\text{H}_1$	$\Delta\text{H}_2$	$\Delta_{\text{eg}}\text{H}$
i.	Most reactive non metal	A.	419	3051	-48
ii.	Most reactive metal	B.	1681	3374	-328
iii.	Least reactive element	C.	738	1451	-40
iv.	Metal forming binary halide	D.	2372	5251	+8