Homework Answers
3. The difference in pH is because they have different strengths. HCl is a strong aid that completely dissociates giving it's solution a low pH while acetic acid is a weak acid and does not dissociate completely, meaning it will have a higher pH
Add Answer to:
the HCL and HC2H3O2 solutions both have the same molarity but
differently in ph. why
auestion...
REPOSTING: observing pH changes in Water and Buffer solutions. the amount added of HCl and NaOH...
REPOSTING: observing pH changes in Water and Buffer
solutions.
the amount added of HCl and NaOH are both 25mL.
the buffer solution is made of 2grams of NaC2H3O2 and
4 mL of 6M HC2H3O2 in a 50 mL solution (46mL of water). the
solution will contain 2.4x10^-2 mol each of NaC2H3O2 a d
HC2H3O2.
question:
how to answer it (I'm not sure I'm doing it right and
want an expert to double check):
I need help calculating the theoretical and...
buffer is HC2H3O2/NaC2H3O2 difference in PH: big change when added to buffer. small change when added...
buffer is HC2H3O2/NaC2H3O2
difference in PH: big change when added to buffer. small
change when added to water. why?
why such a bug change when you add an acud or base to water
but not to butfer?
1. a) Describe the difference in observed pH changes upon adding a small amount of strong acid or base to 25.0 mL of water vs to 25.0 mL of your buffer. b) Explain why there was a difference. 6.0M HC,H,O, is corrosive. Prevent...
DATA AND CALCULATIONS A. pH of Acid Solutions: 1. Strong Acid [HCI), [HCI), 2. 21 Measured pH Molarity Calculated p...
DATA AND CALCULATIONS A. pH of Acid Solutions: 1. Strong Acid [HCI), [HCI), 2. 21 Measured pH Molarity Calculated pH 2. Weak Acid [HC,H,O,1 2.92 [HC,H,0,12 3.45 Measured pH Molarity Calculated pH Compare and explain the observed values of pH for these two acids. Which acid pH changed the most on dilution? Explain why (consider the equilibrium occurring)
To have solutions of HCl and acetic acid (CH3CO2H) with the same pH, which of the...
To have solutions of HCl and acetic acid (CH3CO2H) with the same pH, which of the following needs to be done? The concentration of each solution needs to be the same. The concentration of HCl needs to be higher. The concentration of acetic acid needs to be higher. The solutions can never have the same pH. Volume of acetic acid solution must be lower.
The pH of two separate solutions, 1.0 M HNO3 and 1.0M HC H302, are measured. Which...
The pH of two separate solutions, 1.0 M HNO3 and 1.0M HC H302, are measured. Which statement is true? The HNO3 has a higher pH because it is a strong acid. The HC2H302 has a higher pH because it is a weak acid, The HC2H302 has a higher pH because it has more acidic hydrogen atoms. The HC H30, has a lower pH because it has more acidic hydrogen atoms. The two solutions have the same pH because the concentrations...
Need help answering all questions. much appreciated. The Relative Strengths of Some Acids Results Solution pH...
Need help answering all questions. much
appreciated.
The Relative Strengths of Some Acids Results Solution pH from pH Paper pH from Indicators pH from pH Meter 2.8 14 1.99 1.4 1.4. HCL Ha POq HC2H30a Na HQ PO & AL (NO3)3 Zn(NO3)2 NH 4 NO3 1.7 1.7 4.63 2.4. 2.8 5.00 6.67 Questions 1. a. Calculate the concentration of H.O ions in the most acidic solution that you examined. Use your most precise pH measurement, 262 alculate the concentration of...
PH Study Prelab Questions Name Section 1. The pH of three solutions of 0.10 M HCN....
PH Study Prelab Questions Name Section 1. The pH of three solutions of 0.10 M HCN. HE and HOBr are 5.1.2.1 and 4.7 respectively. Designate which is the strongest and which is the weakest acid. 2. The pH of seawater is 8.30. What is the concentration (molarity) of (H.O'l in seawater 3. Predict whether reaction of each of the following compounds with water will produce an acidic, basic, or neutral solution. Use the information in the introduction to this experiment...
Please walk me step by step on how to get the calculated pH for the weak...
Please walk me step by step on how to get the calculated pH
for the weak acid. I dont understand this at all and really need
step by step not just a brief explanation. Thank you
A pH of Acid Solutions: 1. Strong Acid Measured pH [HCI), 1.48 0.10M [HCI), 2.17 0.010M Molarity (0.0 (1.0) -M2 (10.00 Calculated pH 1.00 2.00 10o = 0.01 -log(0.01)=2 [HC,H,O, Kas 1.8x10s Weak Acid Measured pH [HC,H,O, 3.44 0.01M Molarity 0.10M Calculated pH Compare...
EQUL 499- Det. Of pH of Strong Acid, weak acid, salt, and buffer solution Discussion Topics...
EQUL 499- Det. Of pH of Strong Acid, weak acid, salt, and buffer solution Discussion Topics Discussion Topics (need to submit in Blackboard): 1. What is a buffer? • A buffer is a solution that, when introduced to a new environment, undergoes minimal pH change, typically when adding acidic or basic solutions. These are extremely important for life because the pH of human blood is delicate and even if it is changed by 0.1, there may be catastrophic effects. 2....
Acids and Bases 1) Which of the following is a general property of a basic solution?...
Acids and Bases 1) Which of the following is a general property of a basic solution? a. feels slippery b pH less than 7 c. tastes sour d. turns litmus paper red e. none of the above 2) If a vinegar sample has a pH of 5, the solution is which of the following: a. strongly acidic b. weakly acidic c neutral d. weakly basic e. strongly basic 3) Which of the following is a weak Arrhenius acid a. HNO3...
REPOSTING: observing pH changes in Water and Buffer
solutions.
the amount added of HCl and NaOH are both 25mL.
the buffer solution is made of 2grams of NaC2H3O2 and
4 mL of 6M HC2H3O2 in a 50 mL solution (46mL of water). the
solution will contain 2.4x10^-2 mol each of NaC2H3O2 a d
HC2H3O2.
question:
how to answer it (I'm not sure I'm doing it right and
want an expert to double check):
I need help calculating the theoretical and...
buffer is HC2H3O2/NaC2H3O2
difference in PH: big change when added to buffer. small
change when added to water. why?
why such a bug change when you add an acud or base to water
but not to butfer?
1. a) Describe the difference in observed pH changes upon adding a small amount of strong acid or base to 25.0 mL of water vs to 25.0 mL of your buffer. b) Explain why there was a difference. 6.0M HC,H,O, is corrosive. Prevent...
DATA AND CALCULATIONS A. pH of Acid Solutions: 1. Strong Acid [HCI), [HCI), 2. 21 Measured pH Molarity Calculated pH 2. Weak Acid [HC,H,O,1 2.92 [HC,H,0,12 3.45 Measured pH Molarity Calculated pH Compare and explain the observed values of pH for these two acids. Which acid pH changed the most on dilution? Explain why (consider the equilibrium occurring)
The pH of two separate solutions, 1.0 M HNO3 and 1.0M HC H302, are measured. Which statement is true? The HNO3 has a higher pH because it is a strong acid. The HC2H302 has a higher pH because it is a weak acid, The HC2H302 has a higher pH because it has more acidic hydrogen atoms. The HC H30, has a lower pH because it has more acidic hydrogen atoms. The two solutions have the same pH because the concentrations...
Need help answering all questions. much
appreciated.
The Relative Strengths of Some Acids Results Solution pH from pH Paper pH from Indicators pH from pH Meter 2.8 14 1.99 1.4 1.4. HCL Ha POq HC2H30a Na HQ PO & AL (NO3)3 Zn(NO3)2 NH 4 NO3 1.7 1.7 4.63 2.4. 2.8 5.00 6.67 Questions 1. a. Calculate the concentration of H.O ions in the most acidic solution that you examined. Use your most precise pH measurement, 262 alculate the concentration of...
PH Study Prelab Questions Name Section 1. The pH of three solutions of 0.10 M HCN. HE and HOBr are 5.1.2.1 and 4.7 respectively. Designate which is the strongest and which is the weakest acid. 2. The pH of seawater is 8.30. What is the concentration (molarity) of (H.O'l in seawater 3. Predict whether reaction of each of the following compounds with water will produce an acidic, basic, or neutral solution. Use the information in the introduction to this experiment...
Please walk me step by step on how to get the calculated pH
for the weak acid. I dont understand this at all and really need
step by step not just a brief explanation. Thank you
A pH of Acid Solutions: 1. Strong Acid Measured pH [HCI), 1.48 0.10M [HCI), 2.17 0.010M Molarity (0.0 (1.0) -M2 (10.00 Calculated pH 1.00 2.00 10o = 0.01 -log(0.01)=2 [HC,H,O, Kas 1.8x10s Weak Acid Measured pH [HC,H,O, 3.44 0.01M Molarity 0.10M Calculated pH Compare...
EQUL 499- Det. Of pH of Strong Acid, weak acid, salt, and buffer solution Discussion Topics Discussion Topics (need to submit in Blackboard): 1. What is a buffer? • A buffer is a solution that, when introduced to a new environment, undergoes minimal pH change, typically when adding acidic or basic solutions. These are extremely important for life because the pH of human blood is delicate and even if it is changed by 0.1, there may be catastrophic effects. 2....
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