Which of the following species is amphoteric? NH_4^+ CO_3^2- HPO_4^2- HF None of the above are...
Question 9 4 pts Which of the following species is amphoteric? A) CO32- B) HF C) NH* D) HPO 2 ОА OD OB Ос 4 pts Question 10
3. Identify which reactants are amphoteric species in the following reactions. For those species, determine if the compound is also amphiprotic. Reaction Amphoteric Reactant Amphiprotic? (Y or N) HCO3 + HBr = H2CO3 + Br- 3 HCI + Al(OH)3 = AlCl3 + 3 H2O 2 HBr + ZnO = ZnBr2 + H2O
In the following reaction, which reactant is a Bronsted-Lowry acid? H_2 CO_3(aq) + Na_2 HPO_4(aq) rightarrow NaHCO_3(aq) + NaH_2 PO_4(aq)
Predict the direction for each of the following acid-base reactions. Circle the right choice. a. H_3O^+ + CO_3^2- HCO_3^- + H_2O Forward/Backward b. NO_3^- + HF HNO_3 + F^- Forward/Backward c. HS^- + NH_4^+ H_2S + NH_3 Forward/Backward
#2 & 3
Identify the following species in water, as Bronsted Acids [A] or Bronsted Bases [B]: H_3O^+; H_2SO_4; OH^-; HCN; CH_3COOH; CH_3NH_2 WRITE NET Ionic Equations for the reactions of H_2PO_4^-, an amphiprotic ion, with aqueous solutions of HCl KOH Give the conjugate base for each of the following acids: HI HSO_4^- H_2CO_3 C_2H_5NH_3^+ Give the conjugate acid for each of the following bases: NH_3 O^2- H_2O PO_4^3- Identify the conjugate acid-base pairs in each of the following reactions:...
b. CO32- c. H3O+ d. None of the above species is produced upon the dissolving of ICOS! 1 a, b, and c are produced upon the dissolving of Hcos in water - Which of the following is the pH of a 0.520 M NaOH solution? a. 13.9 b. 13.7 10 - 125 8.53 14 .307 d. 2.84 = 13.6. e. None of the above
the answer is not "none of the above"
A buffer solution that is 0.426 M in HF and 0.426 M in KF has a pH of 3.14. Addition of which of the following would increase the capacity of the buffer for added H3O+? (Select all that apply.) both HF and KF KF pure water HF none of the above An error has been detected in your answer. Check for typos, miscalculations etc. before submitting your answer.
Consider the following reaction which is at equilibrium at 25 degree C: NH_4(NH_2CO_2)(s) 2 NH_3(g) + CO_2(g), delta H degree = 152.2 kJ In which direction will the reaction shift if? *(a) the pressure is increased (b) the pressure decreased (c) the temperature is increased (d) the temperature is decreased (e) some CO_2 is added (f) NH_3 is removed (g) a catalyst is added (h) some NH_4(NH_2CO_2) is added (i) some Ne is added; and, (j) the volume is increased
1.) Which of the following acids below is a strongest acid? A)HF B)HBr C)HI D)HCl 2.) Which of the following is a Lewis acid? A)AlCl3 B)CH4 C)NH3 D)CHCl3 E)None of the above 3.) Which of the following below is stongest basae? A)NO3- B)HBr C)HI D)HCl
Which one of the following is the conjugate base of NH_3? H^+ NH_4^+ NH_2^- N^3. Which of the following best describes the relationship between the following two structures? different compounds with different constitutions identical compounds constitutional isomers resonance structures What is the formal charge on the carbon atom? -1 -2 +1 0 What is the formal charge on the oxygen atom in the structure below? +1 -1 0 +2