Question
please fill in blanks Reactions Part A Part B reagents HCl (aq) NH 3(aq) NH 4 Cl (s) water volume (mL) 25 25 50 molarity
please fill in blanks
Reactions | Part A | Part B | ||||||
reagents | HCl(aq) | NH3(aq) | NH4Cl(s) | water | ||||
volume (mL) | 25 | 25 |
| 50 | ||||
molarity (M) | 0.9776 | 1.30 |
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mass of beaker + NH4Cl (g) |
|
| 31.155 |
| ||||
mass of emptied beaker (g) |
|
| 29.265 |
| ||||
mass of NH4Cl (g) |
|
| 1.89 |
| ||||
n (mmols) | 1.39 | 0.881 | 0.0353 |
| ||||
total calorimeter content | volume (mL) | 50 |
|
| ||||
Density (g mL-1) | 1.00 |
| 1.00 | |||||
mass (g) | 40.1 | Total mass: 50 | ||||||
specific heat, c, (J g-1 oC-1) | 4.184 | 4.184 | ||||||
limiting reagent (yes/no) | Y | N |
| |||||
initial temperature (C) | 23.1 | 22.4 | ||||||
final temperature (C) | 30.0 | 19.8 | ||||||
qcontent (J) |
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qrxn (J) |
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calculated enthalpy of reaction | DH1 | DH2 | ||||||
standard enthalpy (DH) | J mmol-1 |
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kJ mol-1 |
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given enthalpy of solution of NH3(g), DH3, (kJ mol-1) |
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given enthalpy of solution of HCl(g) chloride, DH4, (kJ mol-1) |
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calculated enthalpy of decomposition of NH4Cl(s), DH5, (kJ mol-1)(as determined using the equation/answer to Q1 below) |
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literature enthalpy of decomposition of NH4Cl(s), DH5, (kJ mol-1)(as determined in Q2 below) |
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