How much heat is produced when 100ml of 0.25 m hcl (density 1.00g/ml) and 200 ml of 0.150 m naoh (densty 1.00g/ml) are mixed?
hcl + naoh ? nacl + h2o ho298= -58kj
if both solutions are the same temperatureand heat capaciy of the products is 4.19 j/gc, how much will the temperature increase? what assumption did you make in your calculation?

Explanation:

The given data is as follows.

For HCl : Volume = 100 mL,  Density = 1.00 g/ml,  Molarity = 0.25 M

For NaOH : Volume = 200 mL,  Density = 1.00 g/ml,  Molarity = 0.150 M

Therefore, mass of HCl will be calculated as follows.

              Density =

                 1.00 g/ml =

                              mass = 100 g

Also, number of moles =

Hence, no. of moles of HCl =    (as 1 ml = 1000 L)

                                              =

On the other hand, mass of NaOH will be calculated as follows.

                 Density =

                 1.00 g/ml =

                              mass = 200 g

Also, number of moles =

Hence, no. of moles of HCl =    (as 1 ml = 1000 L)

                                              =

Total mass = (100 g + 200 g) = 300 g

Since, HCl is the limiting reagent over here. So, heat produced by will be calculated as follows.

         Q =

              =

               = kJ

               =   J

Also, it is known that relation between Q and temperature change is:

                                Q =

Hence, putting the values into the above formula as follows.

                      Q =

      14.5 J =      

                    =              

Thus, we can conclude that increase in temperature is .              

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."

i think it's letter a.