PART 1----: If the absorbance for Cr 2 O 7 2- is 0.35, what is the concentration
ID: 934642 • Letter: P
Question
PART 1----:
If the absorbance for Cr2O72- is 0.35, what is the concentration (in mg/mL) at equilibrium.
HINT: USE THE EQUATION OF THE LINE ON THE GRAPH TO CALCULATE THIS VALUE. DO NOT ATTEMPT TO FIND THIS VALUE BY LOOKING AT THE GRAPH!
ROUND YOUR ANSWER TO 2 SIGNIFICANT FIGURES.
DO NOT INCLUDE UNITS IN YOUR ANSWER!
DO NOT USE SCIENTIFIC NOTATION!
PART 2. )What is the equilibrium concentration (in mg/mL) of CrO42-?
HINT: SINCE YOU NOW HAVE THE VALUE IN THE PREVIOUS SECTION, THIS REPRESENTS THE CHANGE IN THE EQUILIBRIUM. DON'T FORGET THAT EXTRA STEP!!!
YOUR ANSWER SHOULD ONLY HAVE 3 SIGNIFICANT FIGURES!!!
DO NOT INCLUDE UNITS IN YOUR ANSWER!
DO NOT USE SCIENTIFIC NOTATION!
2CrO4^2- (aq) + 2H^+(aq) Cr2O7^2- (aq) + H2O(l) PART 1----: If the absorbance for Cr2O72- is 0.35, what is the concentration (in mg/mL) at equilibrium. HINT: USE THE EQUATION OF THE LINE ON THE GRAPH TO CALCULATE THIS VALUE. DO NOT ATTEMPT TO FIND THIS VALUE BY LOOKING AT THE GRAPH! ROUND YOUR ANSWER TO 2 SIGNIFICANT FIGURES. DO NOT INCLUDE UNITS IN YOUR ANSWER! DO NOT USE SCIENTIFIC NOTATION! PART 2. )What is the equilibrium concentration (in mg/mL) of CrO42-? HINT: SINCE YOU NOW HAVE THE VALUE IN THE PREVIOUS SECTION, THIS REPRESENTS THE CHANGE IN THE EQUILIBRIUM. DON'T FORGET THAT EXTRA STEP!!! YOUR ANSWER SHOULD ONLY HAVE 3 SIGNIFICANT FIGURES!!! DO NOT INCLUDE UNITS IN YOUR ANSWER! DO NOT USE SCIENTIFIC NOTATION!Explanation / Answer
part1
0.37
part 2
213
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