Chemistry Tutorial 2.04a: The Calorimetry Equation

This video explains the use of the Calorimetry Equation.

Category:

Education

Tags:

• chemistry
• rosengarten
• potential
• kinetic
• energy
• conversion
• law
• of
• conservation
• exothermic
• endothermic
• kelvin
• celsius
• calories
• joules
• calorimeter
• calorimetry

[richardwang1007]

How much heat is required to raise the temperature of 250.0g of mercury 52C? How would i do that? the equation doesnt fit, so is the C=q/m*t

[MarkRosengarten]

@richardwang1007 You would need to know the specific heat of mercury. Should be easy enough to find online. Then apply the q = mCDT formula.

[richardwang1007]

@MarkRosengarten but we need two Ts, one is initial, one is final, right? Tf - Ti

[MarkRosengarten]

@richardwang1007 Depends on how the question is worded. It looks like you are raising the temperature BY 52C, so DT has already been given to you.

[andynguyen123]

isn't water's constant 4.19J/g0C'

[MarkRosengarten]

@andynguyen123 Every source I've seen puts it at 4.18.

[jesheppa420]

do you have any videos about determining the enthalphy change of an aqueous reaction (acid-base reactions)?

[ycom98]

thank youuuuuuu



[richardwang1007]

@MarkRosengarten OH! that was it, yes, thank you!

[MarkRosengarten]

@andynguyen123 Nope, every reference I've ever seen places it at 1.00 cal/gK, which is equal to 4.18 J/gK.