questions 1-13, I have already done them, but can someone please confirm if they

Question

questions 1-13, I have already done them, but can someone please confirm if they are all right? If you find any wrong, please just write the question down and the correct m.c. of course. ty in advance!

e the one best response to the following statements or quest8(30 DLS 1. A solution with a pOH of 5 is: a) acidic.(b) basic, c) neutral 2. Which of the following pairs consist of a weak acid and a strong base? sulfuric acid and sodium hydroxide c) nitric acid and calcium hydroxide e) hydrofuoric acid and lithium hydroxide b) carbonic acid and ammonium hydroxide d) hydrochloric acid and iron(lI) hydroxide b) [H1-1 X 102 M. c) [OH] = 1 x 10" M, d) pOH = 13.00, 3. Which of these solutions is most basic? (a) [H-1 X 1011 M, e) [H]-1x 10 M 4. What are the acids in this equilibrium reaction? CN. + H2OHCN + OH' a) CN, H2O (b H20, HCN c) CN, OH d) OH, H20 e) none of the above 5. Ethanoic acid dissociates in water approximately 1%. The ethanoate ion is therefore: CH3COOH + H2 CH3COO + H30 a) a poor hydrogen-ion acceptor, b) a good hydrogen-ion acceptor, c) a poor hydrogen-ion donor, (d) a good hydrogen-ion donor 6. A 12.0 M HNO, would be termed: a) concentrated and weak, b) strong and dilute, c) dilute and weak, dconcentrated and strong, e) none of the above 7. Metal oxides will dissolve in water to form this type of solution: a) acidic, (b) basic, c) neutral 8. Which of these is an Arrhenius base? a) NHs, b) H2PO c) Cr, d), LiOH, e) COs 9. Which of the following is the correct formula for chlorous acid? a) HCIO, (b)) HCIO2, c) HCIO3, d) HCIO4 10. Which is not true of an acid or base? a) electrolyte, b) tastes sour or bitter, c) will change the color of an indicator ) is a molecular compound in an aqueous solution, e) metals willreact with bases to produce hydrogen gas a) HClo, (K. >>1) e))HC2HsO2 (K-1.8 x 10s) c) HCIO (Ka= 3.5 x 10-8) d) HOBr (Ka: 2.1 x 10-9) temperature is increased, c) have the same equilibrium constant at every temperature, d) have the same 11. Which of the following would have the strongest conjugate base? 12. A chemical system in equilibrium will: a) have the same concentrations of all products and r eactants, b) always form more products if the reaction, (e) a & d equilibrium constant of a reaction is 4 X 107. At equilibrium: a)the reactants are favored, b) the products a and prod e) none of the above re favored, c) the reactants ucts are present in equal amounts, d) the rate of the forward reaction is much greater than the rate of the 14. For the following reaction: 2NO2(g) N20(g)+ heat which ch ange will not be effective in increasing the amount of NO2(g)? a) in the volume of the reaction vessel, b) increasing the temperature, c) adding N2 to increase the pr essure dremvino the

Explanation / Answer

Q2. Which of the following pairs consist of weak acid and strong base/

Ans. Hydrofuoric Acid and Lithium Hydroxide

Q12. A Chemical reaction will

Ans. have same forward rate as the reverse rate of reaction

Thank You

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