0/4 Submissions Used 7. /0.1 points The reaction 4 HBr(p) + 0,(g)-2 H O(g) +2 Bry(o)...
The reaction 4 HBr(g) + O2(g) 2 H2O(g) + 2 Br2(g) was studied at a certain temperature with the following results: Experiment [HBr(g)] (M) [O2(g)] (M) Rate (M/s) 1 0.00579 0.00579 0.365 2 0.00579 0.0116 0.732 3 0.0116 0.00579 0.732 4 0.0116 0.0116 1.47 (a) What is the rate law for this reaction? ______ (b) What is the value of the rate constant? ______ (c) What is the reaction rate when the concentration of HBr(g) is 0.00598 M and that...
-0.1 points 0/4 Submissions Used Consider the following reaction: 2 HCl(aq) + C30480) + 2 cha) + 2 cos(a) + Hozdl(s) (a) The rate law for this reaction is first order in HCl(aq) and second order in CO (ac). What is the rate law for this reaction? O Rate - [H0,()] C202-a)] Rate - [ HCl(aq)]2[C,0,2(aq)] O Rate - [HCl(aq)] (,0 )] Rate - (HCl(aq)] (0,0,?(20) Rate - [HCl(aq)] C202(aq) Rate - [HgCl(aq) (C20?(9)] (b) of the rate constant for...
Which reagent(s) are used in the following reaction? Br 2 2 Ови, hy Bry H.0 O is. Be O L. HBO Bry Febr
10. -/0.1 points 0/4 Submissions Used At 6412 °C the equilibrium constant for the reaction: 2 NO(O) = N() + O2(a) is Kp - 1.32. If the initial pressure of NO is 0.00381 atm, what are the equilibrium partial pressures of NO, N2, and 022 p(NO) - P(N) - (0) -
- + 0/0.1 points | Previous Answers 3/4 Submissions Used thermometer stirrer coffee cups containing reaction mixture When a 6.14-9 sample of solid iron(II) chloride dissolves in 55.6 g of water in a coffee-cup calorimeter (see above figure) the temperature rises from 20.00 °C to 35.10 °C. Calculate AH in kJ/mol FeCl2 for the solution process. FeCl2(s) → Fe2+ (aq) + 2Cl(aq) The specific heat of water is 4.18 J/g-K. AHsolution = 80.445598 x kJ/mol FeCl2.
RMy Not 14. 0/4 Submissions Used -/0.1 points thermometer stirrer coffee cups containing reaction mixture When a 7.66-g sample of solid iron(III) chloride dissolves in 53.8 g of water in a coffee-cup calorimeter (see above figure) the temperature rises from 21.00 oC to 48.44 °C. Calculate AH in kJ/mol FeCl3 for the solution process. FeCl3(s) Fe3+(aq) + 3 CI'(aq) The specific heat of water is 4.18 J/g-K. kJ/mol FeCl3. AHsolution
4. -10.1 points 0/4 Submissions Used (a) Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion. Reaction rates decrease with increasing temperature. Catalysts increase reaction rates. O Reaction rates can show little change as masses of solid reactants increase. Catalysts decrease reaction rates. Reaction rates increase as concentrations of homogeneous catalysts increase. Slow reactions can be speeded up by raising the temperature.
+-/0.1 points 25 0/4 Submissions Used Calculate the pH of each of the following strong acid solutions. (а) 0.00339 М HNO3 pH = (b) 0.639 g of HBr in 25.0 L of solution pH = (c) 44.0 mL of 4.30 M HNO3 diluted to 3.00L pH = (d) a mixture formed by adding 44.0 mL of 0.000930 M HNO3 to 90.0 mL of 0.00491 M HBr pH =
+-70.1 points 0/4 Submissions Used A voltaic cell is constructed that uses the following reaction and operates at 298 K. Zn(s) + Ni2+ (aq) → Zn2+ (aq) + Ni(s) (a) What is the emf of this cell under standard conditions? (b) What is the emf of this cell when [Ni2+] = 2.52 M and [Zn2+] = 0.178 M? (c) What is the emf of the cell when [Ni2+] = 0.146 M and [Zn2+] = 0.803 M?