The reaction: 2A → C is first order. If the initial concentration of A is 1.0M and the rate constant is 5.9 x 10-3s-1 , What is the final concentration of A after 3.0 minutes?
A. 0.35
B. 0.98
C. 0.94
The reaction: 2A → C is first order. If the initial concentration of A is 1.0M...
2A → B + C The above reaction is run and found to follow first order kinetics with a rate constant of 1.30 x 10-3 sec-1. If the initial concentration of A is 1.73 M, what is the concentration after 133 seconds?
The reaction 2A + 3B → C is first order with respect to A and B. When the initial concentrations are [A] 1.55 x 10 2 M and [B] 2.11 × 10-3 M, the rate is 2.65 x 10 4 M. Calculate the rate constant or the reaction. Enter your answer in scientific notation. 10 O M ● M-1 M1.s1
Reaction 2A + B --> 3C is first order in B and zero order in A. The initial concentrations are 0.250M for A and B and 0.000M for C. The rate constant for a certain temperature is 1.30 x 10-3 s-1. Write down the rate law for this reaction in terms of disappearance of the reactant B. Calculate reaction half-life Calculate the molarity of B after 50.0 sec. Calculate the molarity of product C after 50.0 sec. Calculate molarity of...
5. The following reaction is a second order irreversible reaction: 2A + 3B2C i. Derive an expression for the rate of change in the concentration of A as a function of reaction time, initial concentrations and a second order rate constant. Solve this differential equation to yield an equation for fractional conversion of A as a function of time The rate constant is 0.02 L mmol min, and the initial concentrations of A, B, and C are 10 mmol/L, 10...
A first order reaction (A—>B) has a half-life if 30 minutes. If the initial concentration of A is 0.900 M, what is the concentration of B after 60 minutes?
Question 3 1 pts The rate constant, k, of the first order reaction A B +C is k = 8.62 x 10-35-1. If the initial concentration of A is 2.74 M, how long will it take for the concentration of A to fall below 0.32 M? Give your answer to one decimal place in MINUTES (do not input the units). For example, if your answer is 8.956 minutes, enter 9.0 Question 4 1 pts The rate constant, k, of the...
1a ) The reaction 2 A → B + C is first order in A. A time lapse of 180 s was required for the concentration of A to drop from an initial value of 1.5 x 10-2 M to 2.5 x 10-3 M. How much additional time, in s, is required for [A] to decrease further to 1.0 x 10-4 M? A. 500 B. 320 C. 750 D. 360 E. 180 1b) For a reaction that proceeds by the...
the rate constant for the reaction 2A->B is 7.31 x 10-3s-1 at 110 degree C. The reaction is first order in A. How long(in seconds) will it take[A] to decrease from 1.17M to 0.450M? _______s
3. The thermal decomposition of A, 2A + products is a second-order reaction. Given that the initial concentration of A is = 2.45 x 10-3 M and the intial rate of reaction is 2.05x10-6 M s-1, calculate the rate constant. Also calculate the rate of reaction after 90% of A has reacted.
A certain first-order reaction (A products) has a rate constant of 5.40 10-3 s I at 45 °C How many minutes does it take for the concentration of the reactant, [A], to drop to 6.25% of the original concentration? at 27 °C A certain second-order reaction (B-products) has a rate constant of 1.05x10-3 M 1.s and an initial half-life of 266 s What is the concentration of the reactant B after one half-life?