Chemistry

These are the important highlights of integrated rate equations:

• predict the rate of a reaction
• calculate order of reaction (zero, first, second)
• understand mechanism of a reaction
• compute half life
• calculate the value of k

Yes, the phase of the reactant (solid, liquid or gas) actually affects the rate of a reaction. Gases and Liquids tend to move more freely and effectively as compared to solids, which increaes the frequency of particles colliding with each other.

This is possible because these catalysts have a lower activation energy, which allows a comparatively higher number of particles to react at a faster rate. More number of particles will mean more frequent collisions which speeds up the process.

16.00
X + Y? 2Z
Initial 1.0 1.5 0.5
At equ m 1-x 1.5-x 0.5+2x
equ m conc 0.75 1.25 1.0
0.5 + 2x = 1
x = 0.25
K = 1 / (0.75 * 1.25)
K = 16/15
x = 16.00

50.00
K? Cr? O? + FeC? O? → Fe³? + CO? + Cr³? + K? + H? O
n_f=6    n_f=3
Now apply equivalent concept
0.02 * 6 * V = (0.288 / (144/3) * 10³
Normality
V = (0.288 * 10³)/ (48 * 6 * 0.02) = 50.00 mL

13.49
2 A (g) → A? (g)
Δn_g = 1 - 2
Δn_g = 1
ΔH = ΔU + Δn_gRT
ΔH = -20 * 10³ + (-1)8.31 * 298
ΔH = -22477.572 J mol? ¹
ΔG = ΔH - TΔS
ΔG = -22477.572 - (-30)298 = -22477.572 + 8940
ΔG = -13537.57 J mol? ¹

Δ? > P
Pairing of electron will take place

Number of unpaired electron = 0
µ = 0.00

9.00

α - D - Glucose sucrose β – D - Fructose

(A) Trans

(B) Cis

Optically inactive due to presence of plane of symmetry

Optically active no plane of symmetry

Boiling and clark's method (Ca (OH)? ) are used for removing temporary hardness. Whereas, calgon, sodium carbonate ion exchange method are used for removing permanent hardness.