Calculate the work done (in joules) by a chemical reaction if the volume increases from 3.3L to 3.5L against a constant external pressure of 3.7atm .

work = p*delta V.

That gives units of L*atm. Convert L*atm to joules. 1 L*atm = 101.25 joules.

To calculate the work done by a chemical reaction, you can use the formula:

Work = -P * ΔV

Where:
Work is the work done by the reaction (in joules)
P is the external pressure (in atm)
ΔV is the change in volume (in liters)

Given:
P = 3.7 atm
ΔV = 3.5 L - 3.3 L = 0.2 L

Substituting the values into the formula:

Work = -3.7 atm * 0.2 L

To convert atm * L to joules, you can use the conversion factor: 1 atm * L = 101.3 J

So, the work done by the chemical reaction is:

Work = -3.7 atm * 0.2 L * 101.3 J / 1 atm * L

Work = -7.426 J

Therefore, the work done by the chemical reaction is approximately -7.426 joules. Note that the negative sign indicates work done against the external pressure.

To calculate the work done by a chemical reaction, you can use the formula:

Work = -P * ΔV

where:
- Work represents the work done in Joules (J)
- P represents the external pressure in atmospheres (atm)
- ΔV represents the change in volume in liters (L)

In this case, the given external pressure P is 3.7 atm and the change in volume ΔV is (3.5 L - 3.3 L) = 0.2 L.

Now, simply substitute these values into the formula:

Work = -P * ΔV
= -3.7 atm * 0.2 L

To perform the calculation, we need to convert atm to a more standard unit, such as Pascals (Pa):

1 atm = 101325 Pa

So, converting the pressure:

3.7 atm * 101325 Pa/atm = 374782.5 Pa

Now, we can continue the calculation:

Work = -374782.5 Pa * 0.2 L

However, we need to convert liters to cubic meters (m^3) for the units to be consistent.

Since 1 L = 0.001 m^3:

0.2 L = 0.2 * 0.001 m^3
= 0.0002 m^3

Substituting the values again:

Work = -374782.5 Pa * 0.0002 m^3
= -74.9565 J

Therefore, the work done by the chemical reaction is approximately -74.9565 joules (J). The negative sign indicates that work is done on the system, meaning that energy is absorbed by the reaction.