Question

If a chemical reaction occurs at the rate of 2.25 x 10^-2 moles per liter per second, what is the rate in moles per liter per minute?

Answer 1

The product moles per liter created in sixty seconds are sixty times the moles per liter created in just one second, provided the rate is constant.

That is because there are sixty seconds in a minute.

Answer 2

1.35 mol/l/min

Since there are 60s in 1 minute you x `2.25xx10^(-2)` by 60 which =1.35mol/l/min

Answer 3

To convert moles per liter per second to moles per liter per minute, all you really need to do is convert seconds to minutes.

So, you know that you have a chemical reaction that occurs at a rate of `2.25 * 10^(-2)"moles L"^(-1)"s"^(-1)`. Convert it to moles per liter per minute by using a conversion factor that gets you from seconds to minutes

`2.25 * 10^(-2)"moles"/("L" * cancel("s")) * (60cancel("s"))/"1 minute"= "1.35 moles L"^(-1)"min"^(-1)`

Always try to think of a appropriate conversion factor when trying to go from one unit to another. For example, if you wanted to go from moles per liter per second to moles per mL per hour, you'd use a series of conversion factors

`2.25 * 10^(-2)"moles"/(cancel("L") * cancel("s")) * (1cancel("L"))/"1000 mL" * (3600cancel("s"))/"1 hour" = 8.1 * 10^(-2)"moles mL"^(-1)"h"^(-1)`