# Chemistry

posted by .

If 50.00mL of 1.10M NaOH is added to 25.00mL of 1.86M HCl, with both solutions originally at 24.70 degrees Celsius, what will be the final solution temperature? (Assume that no heat is lost to the surrounding air and that the solution produced in the neutralization reaction has a density of 1.02g/mL and a specific heat of 3.98J/g*degrees Celcius.)
Express answer in four significant figures.

• Chemistry -

You have a great deal of information but you're still missing the heat of reaction (heat of neutralization).

• Chemistry -

oops, here it is:
-55.84 kJ/mol H20 produced

• Chemistry -

50.00 x 1.10 = 55.00 millimols NaOH
25.00 x 1.86 = 46.5 mmols HCl

.......NaOH + HCl ==> NaCl + H2O
I......55.00..46.50.....0......0
C.....-46.5..-46.5.....46.5...46.5
E......8.5.....0.......46.5...46.5
That 46.5 millimols = 0.0465 mols H2O.
55.84 kJ/mol x 0.0465 mols = 2.597 kJ heat = q.
q = mass H2O x specific heat H2O x (Tfinal-Tinitial)

I would change q to J from kJ, use density to find mass of the 75.00 mL H2O, substitute Ti and sp.h. and solve for Tf. (I am ignoring the specific heat of the unreacted NaOH(solid) as well as that of the NaCl(solid) formed.)

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### chemistry

Can anyone help me with these Chemistry questions?
2. ### Chemistry

When 35.0 mL of 1.43 M NaOH at 22.0 degres Celsius is neutralized by 35.0 mL of HCL also at 22.0 degrees Celsius in a coffee-cup calorimeter, the temperature of the final solution rises to 31.29 degrees Celsius. Assume that the specific …
3. ### chemistry

Consider the reaction HCl + NaOH ->NaCl + H2O Given: HCl Solution: 22 degrees celsius NaOH Solution: 22 degrees celsius Final Temperature: 26.1 degrees celsius A. Calculate the amount of heat evolved when 15 mL of 1.0 M HCl was …
4. ### chemistry

In Chemistry: what is ph during the titration of 20.00ml of 0.1000m triethylamine (ch3ch2)3n (kb=5.2x 10-4) with 0.1000m HCL solution after the additions of titrant : a) 0ml (b) 10.00ml (c) 19.00ml (d)15.00ml (e) 20.00ml (f) 25.00ml
5. ### Chemistry

If 50.00mL of 1.10M NaOH is added to 25.00mL of 1.86M HCl, with both solutions originally at 24.70 degrees Celsius, what will be the final solution temperature?
6. ### Chemistry

10.0 mL of a 0.300M NH3 solution is titrated with a 0.100M HCl solution. Calculate the pH after the following additions of HCl. 0.00mL 10.00mL 30.00mL 40.00mL
7. ### chemistry

If 15.0 mL of a 1.5M HCl solution at 22.5 degrees C is mixed with 25.0mL of a 1.5M NaOH solution at 21.5 degrees C that is in a calorimeter, and the final mixed solution temperature ends up at 28.5 degrees C, 1.)what is the balanced …
8. ### chemistry

Assume that no heat is lost to the surroundings and calculate the enthalpy involved when 200. mL of .10 M potassium hydroxide and 200. mL of .10 M hydrochloric acid are mixed. Both solutions began at room temperature, 24.5 degrees …
9. ### chemistry

The reaction of hydrochloric acid and sodium hydroxide is exothermic HCl +NaOH --> NaCl + H2O In one experiment, a student placed 50.0 mL of 1.00 M HCl at 25.5 oC in a coffee cup calorimeter. To this was added 50.0 mL of 1.00 M …
10. ### chemistry

The reaction of hydrochloric acid and sodium hydroxide is exothermic HCl +NaOH --> NaCl + H2O In one experiment, a student placed 50.0 mL of 1.00 M HCl at 25.5 oC in a coffee cup calorimeter. To this was added 50.0 mL of 1.00 M …

More Similar Questions