A student enters the lab and conducts Part A of the Experiment. The student uses 25.00 mL of 2.112 M HCl, and adds NaOH in excess as instructed. If the ΔH of the neutralization reaction is known to be -57,320 J/mol H2O, what is the total theoretical heat released (in Joules)?

 3026.5 J

Explanation:

To calculate the number of moles for given molarity, we use the equation:

    .....(1)

Molarity of solution = 2.112 M

Volume of solution = 25.00 mL

Putting values in equation 1, we get:

a)

The balanced chemical reaction is:

As is the limiting reagent , it limits the formation of product. is the excess reagent.

1 mole of HCl produces = 1 mole of

0.05280 mole of HCl produces = moles of

Given :

Energy released when 1 mole of is produced = 57320 J

Thus Energy released when 0.05280 moles of is produced =

Thus 3026.5 J is the total theoretical heat released

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.