1. Compare acid strength between hypochlorous acid (HOCI) and hypobromous acid (
ID: 1032946 • Letter: 1
Question
1. Compare acid strength between hypochlorous acid (HOCI) and hypobromous acid (HOBr). Which is stronger acid? Explain your answer. How about sodium hypochlorite (NaOCI) and sodium hypobromite (NaOBr)? Find which is more basic and explain your answer And calculate pH of 0,05 M sodium hypochlorite (NaoC) solution. K, of hypochlorous acid is 3.5 x 10 at 25 oC. 2. Ethylamine (CH,CH,NH) is a base compound. a) Write base dissociation reaction of ethylamine. b) If K, of ethylamine is 7.41 x 10o, what is the pH of 0.15 M ethylamine sol 3. The following shows reaction mechanism of decomposition of ozone Step 1 O(g) + Cl(g) CIO(g+O-g Step 2 CIO(g) +0(g)-0(g)+CI fast a) Write the overall reaction. b) Which species is catalyst? c) Which species is reaction intermediate? d) Write the rate law of this reaction. 4. Dinitrogen tetroxide (N O4) decomposes to nitrogen dioxide (NO). The equilibrium reaction in the gas phase is: N204(g) 2NO-(g K 0.36 at 100 °C a) Write down the equilibrium expression of the reaction. b) If 1.0 L flask initially contains 0.200 M of N O, and 0100 M of NO, what will be the equilibrium concentration of NO, and N Os2 (hint: Use reaction quotient (0 to determine the direction of the reaction.) 5. The following shows two chemical reactions and their equilibrium constant at 25 °C K-1.0 x 10 2 N(g) +3/2 H(g)NH(g) K 8.3 x 10 Using given information, calculate Ke value for the following chemical reaction: liity,2NO(g) + 3H2(g)-2NH,(g) + 0 (g) 6. The following reaction shows combustion reaction of propane gas at 25 °C. C,Hs(g) + 502(g) ?? 3CO2(g) + 4H20(1); dH--22 19.97 kJ/mol Initially 1 L-chamber contained 2.03 M of propane (C,Hs), 3.50 M of oxygen (O) and 0.030 M of carbon dioxide (CO). After equilibrium is reached, the chamber contained 1.53 M of propane (C3Hs). a) Using given information, calculate equilibrium constant (K) of this reaction After equilibrium is reached, if the chamber size is increased to 5 L, predict the direction of equilibrium shift. Explain your answer. o) After equilibrium is reached, if we increase temperature to 1000°C, predict the direction of equibrium shift. d) (Extra credit) What is K, of this reaction? Explain your answerExplanation / Answer
Ans 5
Reverse the first equation
2NO = N2 + O2
K1 = 1/(1*10^-30) = 10^30
Write the second equation and multiply by 2
N2 + 3H2 = 2NH3
K2 = (8.3*10^2)^2 = 688900
Add the overall two equations
2NO + 3H2 = 2NH3 + O2
K = K1 x K2
= 10^30 x 688900
= 6.889 x 10^35
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.