A salt solution sits in an open beaker Assuming constant temperature and pressur

Question

A salt solution sits in an open beaker Assuming constant temperature and pressure, the vapor pressure of he solution The reaction 2A + SB right arrow products is second order in A and first order in B. What is the rate law for this reaction? increases over time decreases over time stays the same over time need to know which salt is in the solution to answer this need to know the temperature and pressure to answer this A first-order reaction is 45% complete at the end of 43 minutes. What is the length of the half-life of this reaction? The reaction 2NOBr right arrow 2No + Br_2 exhibits the rate law rate = k[NOBr]^2 - where k = 1.0 x 10^-5 M^-1 . S^-1 at 25degreeC. This reaction is run where the initial concentration of NOBr ([NOBr]_0) is 1.00 0 x 10^-1 M The [NO] after 1.00 hour has passed is? 10 The reaction of decomposition of N_2O_5 has a rate constant k = 1.0 10^-5 s^1. For a particular experiment ([N,O^5]o = 1-0x10^-3 M). calculate [N_2O_5] after 3.5x10^5 seconds

Explanation / Answer

6. B

7. c

8. K = (1/43)ln(100/55) = 0.0139 min-1.

   T1/2 = 0.693/k = (0.693/0.0139 = 49.86 min

T1/2 = 50 min

9. e

10. c

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