Concept explainers
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To determine:
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Introduction:
Most of the living organisms prefer an environment that has constant
b.
To determine:
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Introduction:
Most of the living organisms prefer an environment that has constant
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To determine:
The
Introduction:
Most of the living organisms prefer an environment that has constant
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General, Organic, and Biological Chemistry (3rd Edition)
- 10.40 Calculate the pH of each solution given the following: a. [H₂0¹] = 1 × 108 M c. [OH] = 1 × 102 M e. [H₂O¹] = 4.7 x 102 M b. [H3O+] = 5 x 106 M d. [OH] = 8.0 × 10-³ M f. [OH] = 3.9 X 10 Marrow_forwardA solution has a concentration of 2.4 x 10-7. Calculate the pH and indicate if the solution is acidic or basic. Select one: a. 2.4, acidic b. 6.6, acidic c. 6.6, basic d. 2.4, basic e. 6.61979, acidicarrow_forwardWhat is the pH of a 1.6 x 10-7 M solution of Ca(OH)2? X Selected Answer: C. 7.51 Answers: A. 6.80 B. 7.62 C. 7.51 D. 7.20arrow_forward
- What is the pH of a 0.00010 M HCl? (4)arrow_forward18. 19. The pH of a solution of HCI was found to be 3.4. The concentration of HCI of this solution (in mol/L) is which of the following? a. 4.0 x 10-4 b. 3.4 c. 0.29 d. 2.5 x 10-¹ -11 e. 2.0 x 10-4 The organic compound aniline (C6H5NH₂) acts as weak base. What is the chemical formula of aniline's conjugate acid? a. С₁H5COOH b. C₂H5NH¯ C. H3O+ d. OH- e. C6H5NH3+arrow_forwardThe following observations are made about a diprotic acid H2A:(i) A 0.10 M solution of H2A has pH=3.10.(ii) A 0.10 M solution of the salt NaHA is acidic. Which of the following could be the value of pKa2 for H2A: A. 9.23 B. 2.38 C. 6.52 D. 5.01arrow_forward
- 29. Determine the ph of a 0.50 M NaH2PO4 and 0.10 M N22HPO4 solution, pKa is 7.21. A. 5,5 O B. 6.5 ) C. 4,5 O D.7.5 30. Determine the ph of a 0.30 M NaH2PO4 and 0.20 M H3PO4 solution. pka is 2.16. O A. 1.3 B. 2.3 C. 3.3 OD.4.3arrow_forwardQ.6 Calculate the pH of 0.2 M solution of sodium acetate.arrow_forward12. a) Show the dissociation (ionization) of the following acids in water HCI HF was your one faorite and one least favorite pan of the do?(3 points) b) Identify the Bronsted acid, Bronsted base, conjugate acid, and conjugate base in each reaction in part A. gaibroooA (a wsoald cheone thing ice H. ug pace bangnoe OFH TO send to bios s 2e 0 li gninesmarrow_forward
- Calculate the [H+ ] in solution of the following pH: a. 3.00 b. 10.53.arrow_forward14. When solid iron reacts with air to produce solid iron (II) oxide, which of the following can be said of iron's role in this reaction? Choose ALL that apply. 2Fe(s) + O₂(g) → 2FeO(s) a. b. C. It is a buffer It is oxidized It is reduced a. b. C. 15. What is the cell potential of a standard galvanic cell using -0.8018 V -0.7618 V -0.7218 V d. e. f. a. Dedication b. Introduction c. Procedure d. e. f. a. Dedication b. Introduction c. Procedure 16. Within which of the following formal lab report sections should the repeatable steps for conducting the experiment be made clear to the reader? It is the oxidizing agent It is the reducing agent It is a spectator ion d. e. f. iron (III) and zinc (see Table 2 in Appendix A). +0.7218 V +0.7618 V +0.8018 V Observations Analyses References 17. Within which of the following formal lab report sections should the researcher organize and display their collected data to the reader? d. Observations e. Analyses f. Referencesarrow_forwardCalculate the pH of the following solutions: a. 5.4 x 10-4 b. 4 x 10-2 c. 8.102 x 10-3arrow_forward
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