Increase in temperature will increase the rate of the reaction; this was stated by Arrhenius and is obtained from Van't Hoff isochore

Md Ariful Islam

0 like 0 dislike
1 views
Share with your friends

1 Answers

Md Ariful Islam

Call

Increasing the temperature of a reaction generally speeds up the process (increases the rate) because the rate constant increases according to the Arrhenius Equation. As T increases, the value of the exponential part of the equation becomes less negative thus increasing the value of k.

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
0.03m aqueous solution of aluminium sulfate has a freezing point of 0.26c. calculate the van't hoff factor

CRT=0.03*8.31*273.26=68

1 Answers 1 views
the rate of chemical reaction a) increase as the reaction proceeds b) decreases as the reaction proceeds c) both a and b remains constant as reaction proceeds

Answer: b) decreases as the reaction proceeds.

1 Answers 1 views
19.5g CH3COOH is dissolved in 500g of water the depression in the freezing point observed is 1.0k calculate van't hoff factor and dissociation constant of the acid.

‎ΔTfreezing=iCmK=1KCm=m( CH3COOH)/(Mr( CH3COOH)*m(H2O))=19.5/(60*0.5)=0.65 mol/kgi=1/(1.86*0.65)=0.83;Kd=(1*0.5/1.86)/(19.5/60)=0.83Answer:i=0.83;Kd=0.83

1 Answers 1 views
The rate constant of second order reaction is 5.7 x 10-5 dm3 mol-1 s -1 at 298 K and 1.64 x 10-4 dm3 mol-1 s -1 at 313 K. Calculate the activation energy and Arrhenius-pre exponential factor.

lnK= lnA- Ea/RTLn5.7×10-5=lnA-Ea/ (298×8.314)2477.572 (Ln5.7×10-5) = 2477.572- Ea- Ea=-24211.97-2477.572lnA…. (i)Ln1.64×10-4= lnA-Ea/ (313×8.314)2602.282(Ln1.64×10-4) = 2602.282lnA- Ea- Ea=-22744.82-2602.282 lnA…. (ii)-24211.97-2477.572lnA= -22744.82-2602.282 lnALnA= 11.76A=31.979- Ea=-24211.97-2477.572lnA- Ea=-24211.97-2477.572(11.76)Ea=53348.21672J/mol

1 Answers 1 views
A 0.1 molar solution of NaCl is isotonic with 1% urea solution. To find out the van't Hoff factor and degree of ionisation of NaCl.

NaCl(1−x) dissociates into Na+(x) and Cl−(x)Total concentration in solution =c(1+x) =0.1M(1+x)Osmotic pressure of NaCl solution =0.1M(1+x) RTOsmotic pressure of urea solution =0.1L (1/60) mol​RTsince solutions are isotonic, therefore, 1+x=1.667(a) Van’s Hoff factor= 1.667(b) Degree of dissociation =x=0.667

1 Answers 1 views
a van gets 22.32 miles per gallon. How many miles can the van drive if the capacity of the gas tank was 32.0 gallons

L=22.32 miles/gallon x 32.0 gallons = 714.24 miles

1 Answers 1 views
in a reversible reaction equilibrium is obtained when the rate of the reverse reaction is equal to the rate of the reverse reaction to the rate of the forward reaction? is true or false?

in a reversible reaction equilibrium is obtained when the rate of the reverse reaction is equal to the rate of the forward reaction

1 Answers 1 views
In the following reaction identify each reactant as an Arrhenius acid or an Arrhenius base and explain your answers. NaOH + HCl → NaCl + H2O

An Arrhenius acid is a substance that dissociates in water to form hydrogen ions (H+); that is, an acid increases the concentration of H+ ions in an aqueous solution: HCl...

1 Answers 1 views
What mass of salt would have to be added to 1100.0 mL of water in order to raise the boiling point of the solution by 0.5 C? Assume the ideal van't Hoff factor for NaCl.

dT = Kb * b * iKb for water = 0.513b = 0.5/(0.513 * 2) = 0.48 (mol/kg)b = n*i/mn(NaCl) = b*m = 0.48 * 1.1 = 0.53 (mol)m(NaCl) =...

1 Answers 1 views
Explain how the Lewis definition of a base is different from that of the Arrhenius definition of a base. Are Arrhenius bases also bases under the Lewis definition? Explain.

According to Arrhenius, a base dissolves in water and produces OH- ions. According to Lewis, a base is a molecule that donates an electron pair. Lewis definition is applicable to...

1 Answers 1 views
X