19 * (1 Point) Which of the following represents a buffer equilibrium? A. HI + H20...
25 (1 Point) Consider the following: CH,COOH + H20 ~ CH,COO + H20+ A buffer solution is prepared by adding NaCH,COO to CH,COOH (aq) When a few drops of NaOH solution are added to the buffer, the equilibrium .... + A. shifts left and [CH,COO) increases. B. shifts left and [CH,COO ) decreases. C. shifts right and (CH COO ) increases. D. shifts right and [CH,COO ] decreases E. doesn't shift and [CH,COO) remains constant OA OB OC OD E
5 (1 Point) Consider the following equilibrium for an indicator: Hind + H2OH,0* + Indº Which two species must be of two different colours in order to be used as an indicator? A. Hind and H2O B. Hind and Ind C. H,O* and Ind D. Hind and H,0* E. H2O and Ind ОА НОВ с Ο Ε
Part 1 (3 points) Sec Match each name with the correct molecule or ion. Ο Ο Ο Ο Θ H2O( Part 2 (3 points) Select the complete ionic equation for this reaction. Choose one: A. H*(aq) + OH- (aq) —H,0(1) B. HCl(aq) + NaOH(aq) NaCl(aq) + H20(1) C. H(aq) + CI+ (aq) + Nat(aq) + OH (aq) Nat(aq) + Cl" (aq) + H, 0(1) D. HCI(1) + NaOH(s) —— NaCl(s) + H20(1)
can comeone help QUESTION 15 Which of the following is the net ionic reaction between hydrochloric acid and aqueous sodium hydroxide? NaOH(aq) + HCl(aq) + NaCl(aq) + H20 (1) H(aq) + OH(aq) + H20 (1) Nat (aq) + C (aq) - NaCl (aq) b. NaOH(aq) + HCl(aq) + NaCl (aq) + H20 (1) Na* (na) + OH' (aq) + NaOH(aq) Od
1. Which of the following make a buffer solution? (circle all the correct answers) a. 0.1 M HCl and 0.1 M NaCl b. 0.1 M HF and 0.075 M KF C. 0.15 M Pentanoic acid and 0.15 M sodium pentanoate d. 0.1 M NaOH and 0.1 M HCI e. 0.1 M acetic acid and 0.00001 sodium acetate 2. Which of the following could make buffer systems when mixed together? (circle the correct answers) a. 0.10 M acetic acid and 0.05...
17. Which of these acids is the strongest? A) H2SO3 B) H2SO3 C) H2TeO3 18. Which one of these net ionic equations represents the reaction of a strong acid with a weak base? A) H(aq) + OH(aq) + H2O(aq) B) H(aq) + CH3NH2(aq) → CH3NH3(aq) C) OH(aq) + HCN(aq) → H2O(aq) + CN-(aq) D) HCN(aq) + CH3NH2(aq) → CH3NH3+ (aq)+ CN (aq) 19. Predict the direction in which the equilibrium will lie for the reaction H2CO3 + HCO,- + HF....
What is the major Organic product of the following sequence of reactions? CH ΠΗ H H 1) CHI (excess) 2) Ag20, H2O, A H NH CH; CH CH3 ΠΗ H H H H H H ΝΗ T н "CH; (a) CH; (6) (c) CH CH CH, AH H H H i û H H (d) a. a b. b Ос. с O d.d ee f. f What is the major Organic product in the following dehydration reaction? ОН Н;PO4 ??...
Which of the following is a buffer system? O HCl(aq) and NaOH(aq) O H2CO3(aq) and KHCO3(aq) O NaCl(aq) and NaNO3(aq) O H204) and HCl(aq) NaCl(aq) and NaOH(aq) State whether the structure is the a- or B-form. CH OH НО Мон H ОН . OH нОН
19. Which of the listed compounds can exist in equilibrium with the following compound via an enediol intermediate? он о CH,CH–C–CH,CH, ООН a. CH-C—CHCH, O b. HOCHZ-C-CH.CH OH OH C. CH, -CH=CH-CH, O 11 d. CH-C–OCH.CH CH,C-CHCH.CH 0 OH 20. b. c. d. e. 21. Assign the IUPAC name to the following compound. (CHỊ) CHCH CHO a. 3,3-dimethyl-propanal 3.3-dimethyl-butanone 3,3-dimethyl-propanol 3-methyl-butanal 3,3-dimethyl butanol Which alcohol(s) will be formed when the following is hydrolyzed? CH,CHÚCH CHOCHỊCH OCH, only methanol b. only...
need all FOUR please!! please! provided Ka values if needed A buffer solution is made that is 0.451 M in H, S and 0.451 M in NaHS. If K for H, Sis 1.00 x 10-7, what is the pH of the buffer solution? pH= Write the net ionic equation for the reaction that occurs when 0.105 mol NaOH is added to 1.00 L of the buffer solution (Use the lowest possible coefficients. Omit states of matter.) Submit Answer Retry Entire...