Homework Answers
The amount heat energy released when neutralization of strong acid and strong base is -57.5KJ/mole.
If acid or base is weak amount of heat energy is released by neutralization of acid and base
HCl is strong acid and NaOH is strong base
HCl(aq) + NaOH(aq) --------> NaCl(aq) + H2O(l) 
H = -57.5KJ/mole
H
is most negative
B. NH4OH is weak base and HC2H3O2 is weak acid .
NH4OH (aq) + HC2H3O2(aq) ------------> NH4C2H3O2(aq) +
H2O(l)
H is very less than -57.5KJ/mole
H
is smallest negative
C. NH4OH is weak base and HNO3 is strong acid .
NH4OH(aq) + HNO3(aq) ------------> NH4NO3(aq) + H2O
(l)
H less than -57.5KJ/mole
H
is small negative
Add Answer to:
Thermochemistry Experiment 3 Name: PRELAB QUESTIONS 1. Based on the notion of weak and strong acids...
NAME INSTRUCTOR DATE SECTION GROUP POST-LABORATORY QUESTIONS THERMOCHEMISTRY: ACID-BASE NEUTRALIZATION 1. Use Hess's Law and the...
NAME INSTRUCTOR DATE SECTION GROUP POST-LABORATORY QUESTIONS THERMOCHEMISTRY: ACID-BASE NEUTRALIZATION 1. Use Hess's Law and the class enthalpy values for the reactions of NaOH-HC and NH, HCl to calculate the enthalpy of neutralization of ammonium chloride and hydrochloric acid. You may need to reverse or multiply the chemical equations from Table 7.2 and 7.3 to get them to add up correctly: Experiment Chemical reaction (Refer to the reactions that you wrote in prelab question 3). Class enthalpy value (kJ/mol 7.2...
In an aqueous solution, classify these compounds as strong acids, weak acids, strong bases, weak bases,...
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I need help with 1-5 on electrolyte type, major species, and minor species 17-7 Part II....
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what is solution ? (References) Strong acids and strong bases ionize 100% in aqueous solution -...
what
is solution ?
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Titration Curves of Strong and Weak Acids and Bases. Pre-lab questions. Sed and weak acids ng acids cont 214-2343 -...
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Titration Curves of Pre-lab questions. rves of Strong and Weak Acids and Bases. e 1. Explain...
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I need help with figuring out question 6 and 7 Part 2: Molar AH neutralization STRONG...
I need help with figuring out question 6 and 7
Part 2: Molar AH neutralization STRONG ACIDS | Strong Acid HCI NO HSO4 1-23 -S3 L05 -94 -38 -304 /mol -65&slmol -S4 ks/mol Average HCOOH Part 2: Molar AH neutralization WEAK ACIDS Weak Acid CH3COOH 119 - 46 cla HPO4 - -10 414 -18 -17 - 23 -14 _-17 SI 39 -47kslmol -38 KS/mol -dak/mol Average Part 3: Molar AH reaction of metal + HCI Metal SO 49 Average -650...
3. i). Write the formula of four strong acids and four strong bases. ii). List four...
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Questions: 1. Write balanced equations for each of the four different acid-base reactions in this experiment....
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1. Which of the followi ch of the following reactions is not readily explained by the Arrhenius concept of acids a...
1. Which of the followi ch of the following reactions is not readily explained by the Arrhenius concept of acids and bases? a. A. HCl(aq) + NaOH(aq) - NaCl(aq) + H20() b. H30(aq) + OH-(aq) + 2H20(1) c. HCI(g) + NH3(g) - NH4Cl(s) d. HC2H302(aq) + H2O(l) H30*(aq) + C2H302-(ag) e. H30 (aq) + OH-(aq) + 2H2O(aq) 2. Classify each of the following species as Brønsted acid or base or both: a) H20, b) OH", c) H30, d) NH3, e)...
NAME INSTRUCTOR DATE SECTION GROUP POST-LABORATORY QUESTIONS THERMOCHEMISTRY: ACID-BASE NEUTRALIZATION 1. Use Hess's Law and the class enthalpy values for the reactions of NaOH-HC and NH, HCl to calculate the enthalpy of neutralization of ammonium chloride and hydrochloric acid. You may need to reverse or multiply the chemical equations from Table 7.2 and 7.3 to get them to add up correctly: Experiment Chemical reaction (Refer to the reactions that you wrote in prelab question 3). Class enthalpy value (kJ/mol 7.2...
In an aqueous solution, classify these compounds as strong acids, weak acids, strong bases, weak bases, or other. Strong acid Weak acid Strong base Weak base Other Answer Bank H, PO, HBr Ba(OH), Сн, соон | LIOH (CH, BN HNO, NH, NaCl What is the pH of a 8.6 x 10-8 M solution of HCl(aq) at 25 °C? Report your answer to the hundredths place. pH = < Question 17 of 22 > Arrange the aqueous solutions from the most...
I need help with 1-5 on electrolyte type, major species, and
minor species
17-7 Part II. Acids and Bases in Aqueous Solution Sample Conductivity Electrolyte Type Major Species in Solution Minor Species in Solution (if applicable) 1. HC2H2O2(aq) weak 2. HCl(aq) strong 3. NaOH(aq) strong 4. NH3(aq) Week 5. HC2H2O2(aq) + NH3(aq) strong Part III. Reactions in Aqueous Solution Reactants Na2CO3(aq). H2SO4(aq) NaOH(aq) NH3(aq) Pb(CH3O2)(aq) Fe(NO3)3(aq) NH,C,H,O2(aq) H2SO4(aq)
what
is solution ?
(References) Strong acids and strong bases ionize 100% in aqueous solution - HCl is a strong acid. In solution we write it as H(aq) + Cl(aq). - HF is a weak acid. In solution we write it as HF (aq). - KOH is a strong base. In solution we write it as K (aq) + OH(aq). - NH3 is a weak base. In solution we write it as NH3(aq). Exception: Since Ca(OH)2 is only slightly soluble...
Titration Curves of Strong and Weak Acids and Bases. Pre-lab questions. Sed and weak acids ng acids cont 214-2343 -110.51 Explain the difference between a strong acid and a weak acid. A Strong Acd die Insed and weak are ionsrzed partially. Moreover Strong oud a higher concentration of Hydrogen 2. Calculate the pH of an HCl solution in which the (H30'] = 1.75 x 10 M. DH- og IH30-] [H2O PH- - 1.75% 103] PH=72.75 3. Calculate the pH of...
Titration Curves of Pre-lab questions. rves of Strong and Weak Acids and Bases. e 1. Explain the difference between a stre xplain the difference between a strong acid and a weak acid. **Calculate the pH of an HC Solution in which the H.01 -1.75 x 10°M. Calculate the pH of a NAOH solution in which the (OH) 3.7 x 10" M. Labc 4. Calculate the [H.O') when pH = 7.42 5. Calculate the [H3O+] when pOH = 5.43 6. Calculate...
I need help with figuring out question 6 and 7
Part 2: Molar AH neutralization STRONG ACIDS | Strong Acid HCI NO HSO4 1-23 -S3 L05 -94 -38 -304 /mol -65&slmol -S4 ks/mol Average HCOOH Part 2: Molar AH neutralization WEAK ACIDS Weak Acid CH3COOH 119 - 46 cla HPO4 - -10 414 -18 -17 - 23 -14 _-17 SI 39 -47kslmol -38 KS/mol -dak/mol Average Part 3: Molar AH reaction of metal + HCI Metal SO 49 Average -650...
3. i). Write the formula of four strong acids and four strong bases. ii). List four factors that affect the strength of an acid. iii). Predict the relative strength of the following compounds: H2O, H2S and H2Se. iv). Which of the following is the stronger acids: CHCICOOH or CHCI-COOH? Explain. v). Al 3* is not a Bronsted acid, Al(H2O)" is. Explain. vi). All Bronsted acids are Lewis acids, but the reverse is not true. Give two examples of two Lewis...
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1. Which of the followi ch of the following reactions is not readily explained by the Arrhenius concept of acids and bases? a. A. HCl(aq) + NaOH(aq) - NaCl(aq) + H20() b. H30(aq) + OH-(aq) + 2H20(1) c. HCI(g) + NH3(g) - NH4Cl(s) d. HC2H302(aq) + H2O(l) H30*(aq) + C2H302-(ag) e. H30 (aq) + OH-(aq) + 2H2O(aq) 2. Classify each of the following species as Brønsted acid or base or both: a) H20, b) OH", c) H30, d) NH3, e)...
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