When 35.0 mL of 1.43 M NaOH at 22.0oC are neutralized by 35.0
mL of HCl...
When 35.0 mL of 1.43 M NaOH at 22.0oC are neutralized by 35.0
mL of HCl also at 22.0oC in a coffee cup calorimeter, the
temperature of the final solution rises to 31.29oC.
The specific heat of all solutions and the density of all
solutions is the same as that of water. Calculate the heat of
neutralization for one mole of HCl.
Please show all work with the correct answer. Thank
you!!!!
1.When 35.0 mL of 1.43 M NaOH at
22.0oC are
neutralized by 35.0 mL of HCl also at
22.0oC in a coffee
cup calorimeter, the temperature of the final solution rises to
31.29oC.
The specific heat of all solutions
and the density of all solutions is the same as that of
water. Calculate the heat of
neutralization for one mole of HCl.
2.
1.Given the following equation for
the decomposition of aluminum
oxide:
2 Al2O3(s) ---> 4 Al (s)...
When 50.0 mL of 0.45 M HCl was added to 50.0 mL of 0.65 M NaOH,
the temperature change was 5.8 *C. Calculate the heat change for
the reaction (Qsoln) and the heat of neutralization
(ChangeHneut), and the state whether the reaction is
exothermic or endothermic.
When 50.0 mL of 0.45 M HCl was added to 50.0 mL of 0.65 M NaOH,
the temperature change was 5.8 *C. Calculate the heat change for
the reaction (Qsoln) and the heat of neutralization
(ChangeHneut), and the state whether the reaction is
exothermic or endothermic.
Consider the titration of 35.0 mL of 0.143-M of KX with 0.165-M
HCl. The pKa of HX = 6.83. Give all pH values to 0.01 pH units.
a) What is the pH of the original solution before addition of
any acid? pH =
b) How many mL of acid are required to reach the equivalence
point? VA = mL
c) What is the pH at the equivalence point? pH =
d) What is the pH of the solution after the...
250. mL of 0.600 M HCl is mixed with 250. mL of 0.600 M NaOH ,
resulting in a neutralization reaction with net ionic equation:
H+ (aq) + OH- (aq) → H2O(ℓ) ∆Hrxn = -57.0 kJ
Assume the solutions have specific heat capacity of 4.18 J/g C ,
and the solutions have a density of 1.00 g/mL.
The reaction takes place in a coffee-cup calorimeter, and all
heat transfer occurs within the confines of the calorimeter.
If the initial temperature...
A student finds that it takes 35.0 mL of 0.20 M HCl to reach the
equivalence point in titrating 25 mL of an aqueous ammonia (NH3)
sample. Kb for NH3 is 1.8x10–5 .
(a) What was the concentration of ammonia in the starting
solution?
(b) What was the pH of the solution before addition of any
acid?
(c) What would be the pH of the solution when 15.0 mL of HCl
solution has been added?
(d) What would be the...
For the titration of 25.00 mL of 0.1000 M HCl with 0.1000 M
NaOH, calculate the pH of the reaction mixture after each of the
following total volumes of base have been added to the original
solution. (Remember to take into account the change in total
volume.) Select a graph showing the titration curve for this
experiment. (a) 0 mL (b) 10.00 mL (c) 24.90 mL (d) 24.99 mL (e)
25.00 mL (f) 25.01 mL (g) 25.10 mL (h) 26.00...
25 ml of 0.105 M HCl is titrated with 0.210 M NaOH
a. What is the ph after 5 ml of the base is added?
b. what is the ph at the equivalence point?
c. What is the ph after 15 ml of the base added?
d. how many ml of the base will be required to reach the end
point?
1) Calculate the pH of the resulting solution if 35.0 mL of
0.350 M HCl(aq) is added to 40.0 mL of 0.350 M NaOH(aq) .
2) Calculate the pH of the resulting solution if 35.0 mL of
0.350 M HCl(aq) is added to 45.0 mL of 0.400 M NaOH(aq) .