Data Table. Acid-Base Reactions.
Row A 1 2 3 4 5 6
HCl pH: pH: pH: pH:
# drops NaOH
B
CH3COOH pH: pH: pH: pH: pH:
# drops
C
C2H2SO4 pH: pH: PH: pH: pH: pH:
# drops NaOH
D
H3PO4 pH: pH: PH: pH: pH: pH:
# drops NaOH
a. Visually analyze the wells in the plate. What information can be gleaned from each well based on the color of the BTB indicator after each reaction has occurred? How do you know if neutralization has occurred?
b. What factors determine if neutralization occurs during an acid-base reaction?
c. Is the pH at the equivalence point always equal to 7? Explain your answer based on your experimental observations. Include a discussion of equivalence point pH values for strong versus weak acids.
d. In all the chemical reaction performed, neutralization occurs when the pH is neutral (7) or basic (>7). Did any of the reaction not result in a color change of the BTB indicator from yellow (acid) to blue (base)? Explain why neutralization may not have occurred in one or more reactions.
Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.
Answer from: Quest
What record? the question is incomplete
Answer from: Quest
Ibelieve the answer is d. bleachhope my answer has you : )
Answer from: Quest
D=m/v =57.9/3 = 19.3 g/cm^3
Another question on Chemistry
Chemistry, 21.06.2019 21:00
Iwll give extra points to who gets this for ! what type of reaction is this? ?
Substance 33Β°f 100Β°f peanut oil solid liquid margarine solid liquid chocolate chips solid liquid which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100Β°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.