50.0mL of .500M NaOH is added to 25.0mL of .500M HCL in a calorimeter BOth are...

50.0mL of .500M NaOH is added to 25.0mL of .500M HCL in a calorimeter BOth are at an initial temperature of 25 C ans final temperature is 27.21 C. Assume the mass of the final solution is 76.0 g and the Cs of the solution is 4.18 J/gC. what is the value of q for water, what is the value of q for the reaction, what is the change of H of the reaction in kj/mol?

Expert Solution

q = ms ΔT = = 76 x 4.18 x(27.21-25) = 702.07 joules

NaOH + HCl --------> H2O + NaCl

t=0 25 12.5 millimoles

t=t 12.5 0 12.5 12.5 millimoles

for 12.5 millimoles ---------> energy is 702.07 joules

for 1 millimoles ----------> 702.07/12.5 Joules

for 1 mole= 1000millimoles -------> 1000x (702.07/12.5) =56165.6 joules

ΔH = 56.165.6KJ /moles

queen_honey_blossom answered 1 year ago

When 50.0mL of 0.100 M NaOH and 50.0mL of 0.100 M HCL are mixed. what is...

When 50.0mL of 0.100 M NaOH and 50.0mL of 0.100 M HCL are mixed. what is the pH of the resultant solution? (show two chemical equations to obtain [H+] and then calculate pH)

calculate the pH of a solution which is 10.0mL of 0.100M NaOH is added to 25.0mL...

calculate the pH of a solution which is 10.0mL of 0.100M NaOH is added to 25.0mL of 0.100M HCl

Consider what is the pH of the solution when 25.0mL of 0.01M NaOH is added to...

Consider what is the pH of the solution when 25.0mL of 0.01M NaOH is added to 25.0mL of 0.01M acetic acid. Is it the same as in the case of HCl solution? What will the pH of the solution be if exactly 12.50mL of 0.01M NaOH solution is added to 25.0mL of 0.01M acetic acid solution?

A 50.0ml aliquot of 0.100 M NaOH is titrated with 0.200 M HCl. Calculate the pH...

A 50.0ml aliquot of 0.100 M NaOH is titrated with 0.200 M HCl. Calculate the pH of the solution after addition of 0.0, 5.0, 10.0, 25.0, 35.0, 45.0, 55.0 of HCl. Plot the titration curve in a graph paper.

In a calorimeter, we added 50 mL of 1M HCl to 50 mL of 1.1 M...

In a calorimeter, we added 50 mL of 1M HCl to 50 mL of 1.1 M NH3 which produces NH4Cl. If the temperature increased 5.0 degrees Celsius, what is the molar enthalpy? We weren't given a heat capacity for the calorimeter but it was made out of a glass beaker and the heat capacity of glass is 0.840 J/goC found on google.

To what volume should you dilute 50.0ml of a 5.00M KI solution so that 25.0ml of...

To what volume should you dilute 50.0ml of a 5.00M KI solution so that 25.0ml of the diluted solution contains 3.05g ok KI

A student added 50.0 mL of an NaOH solution to 100.0 mL of 0.300 M HCl....

A student added 50.0 mL of an NaOH solution to 100.0 mL of 0.300 M HCl. The solution was then treated with an excess of aqueous chromium(III) nitrate, resulting in formation of 2.36 g of precipitate. Determine the concentration of the solution.

50mL of 0.010M NaOH were titrated with 0.50M HCl, added with a dropper pipet. If each...

50mL of 0.010M NaOH were titrated with 0.50M HCl, added with a dropper pipet. If each drop has a volume of 0.040mL, calculate how many drops of HCl are needed to reach the end-point of the titration.

If 15.0 mL of a 1.5M HCl solution at 21.50C is mixed with 25.0mL of a...

If 15.0 mL of a 1.5M HCl solution at 21.50C is mixed with 25.0mL of a 1.5M NaOH solution at 21.50C that is in a calorimeter, and the final mixed solution temperature rises to28.50C, what is the ΔHrxnfor this process?Assume that Ccalorimeter= 35.5J/0C. a.What is the balanced equation for the reaction? b.What is the source of the heat that is causing the increase in temperature? c.Calculate the amount of heat absorbed or lost for the HCl/NaOH solution. Assume aqueous conditions.(Cwater=...

When 50.0 mL of 0.45 M HCl was added to 50.0 mL of 0.65 M NaOH,...

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.

Question