Rate Law
What are the units of a first order reaction? What about second? 3rd? zeroth?
0th - MS^-1
1st - S^-1
2nd - M^-1*S^-1
3rd - M^-2*S^-1
What is the main difference between a BL acid/base and a lewis acid/base?
*Hydrogens vs. Electrons
What is the molality of a solution with 3.78 moles solute and 0.138 kg solvent?
27.4 m
Refer to question 4 part 2 on past exam
Refer to question 4 part 2 on past exam
Refer to question 3a/b
Refer to question 3a/b
What are the conjugate pairs and what is their definition?.
*The conjugate base of a Brønsted-Lowry acid is the species formed after an acid donates a proton. The *conjugate acid of a Brønsted-Lowry base is the species formed after a base accepts a proton.
You have a 3.50 L of Solution that contains 90.0 g of sodium chloride, NaCl. What is the molarity of that solution?
90.0 g NaCL / 58g / 1 mol = 1.55 mol 1.55 mol/ 3.50 L = 0.443 M
Calculate the vapor pressure of a solution prepared by dissolving 0.25mol of a nonvolatile solute in 300g of hexane (M =86.18g/mol) at 49.6C. Phexane = 400torr at 49.6C
.P1 = X P1o
X = 3.481/(3.481+0.250) = 0.9330
P = .9330 *400 = 373.2torr
Refer to question 1 on worksheet
Refer to question 1 on worksheet
What is the pOH of a 0.15M HNO3 Solution?
-log(0.15)=pH
pOH = 14-pOH
13.17
SURPRISE - ACID BASE QUESTION
What is the pH of a 0.612M solution of KClO? What is in the beaker?
[H+] = SQRT(Ka/b * M)
Under acidic conditions sucrose (table sugar) can be broken down into its individual sugars,
glucose and fructose. At 27?C it takes 54.5 minutes to convert half the sucrose to glucose and
fructose and at 37?C it takes 13.7 minutes. Estimate the activation energy for the breakdown of
sucrose.
106.7kj/mol