The desired reaction of substitution occurs most rapidly at the ______ – McqOptions

MCQOPTIONS

1.	The desired reaction of substitution occurs most rapidly at the _________ pH values; however, acid hydrolysis of cellulose and hemicellulose also increases with decreasing pH.
A.	High
B.	Slightly above neutral
C.	Slightly below neutral
D.	Low
Answer» E.

Discussion

No Comment Found

Related MCQs

Fill in the blank.pH = pKa + log (CA- / CA)
Fill in the blank.Ka = [H+][Cl–] / [Cl2] = ([H+]3) / (0.091 – [H+])
Fill in the blank.
The hydrolysis of chlorine is also temperature dependent. _________ in Pulping Processes gives the hydrolysis constants of CI2 as a function of temperature; they are 1.45 x 10-4 at 0°C and 9.75 x 10-4 at 60°C.
The pH at intermediate amounts of base is given in the form of the _________equation; consequently, the ratio of HOCI to OCl– is not concentration dependent.
An eq. is easily solved at various pH is by utilization of the quadratic eq. At pH = 0, X = 0.00423 M. At pH 1.66, x = 0.0222 in agreement with the calc. above.
The concentration of Cl in water at 25°Celcius is _________ at saturation (i.e., 1 atmosphere pressure of CI2).
The hydrolysis of chlorine is also temperature dependent. _________ in Pulping Processes gives the hydrolysis constants of CI2 as a function of temperature; they are 1.45 x 10-4 at 0¬¨¬®‚Äö√†√ªC and 9.75 x 10-4 at 60¬¨¬®‚Äö√†√ªC.$
The desired reaction of substitution occurs most rapidly at the _________ pH values; however, acid hydrolysis of cellulose and hemicellulose also increases with decreasing pH.
The pH at intermediate amounts of base is given in the form of the _________equation; consequently, the ratio of HOCI to OCl‚Äö√Ñ√∂‚àö√ë‚àö¬® is not concentration dependent.$