SITEMAP   Physics Notes: Thermal energy 2.4 Measuring specific heat capacity of a liquid

UK GCSE level age ~14-16 ~US grades 9-10 Scroll down, take time to study content or follow links

Thermal energy - specific heat capacity: 2.4 Measuring directly the specific heat capacity of a liquid like water

Doc Brown's Physics exam study revision notes

2.4 Measuring directly the specific heat capacity of a liquid like water You can use a similar set-up to that described above for measuring the SHC of a solid block.

Instead of the block you can use a polystyrene cup (good insulation) with a lid.

Measure a mass of liquid into the polystyrene cup = mass of cup + liquid - mass of empty cup (measured on a mass balance).

You can use water for convenience.

Place the cup in an insulated box or beaker.

The double thermal insulation is essential to minimise the loss of heat energy to the surroundings.

Do extra diagram with a joulemeter?

The procedure is then identical to that described for a solid described in part 2.3.

In SHC experiments you can include in the power supply circuit a joulemeter to measure the energy transferred, which makes the calculation a lot easier.

By using a joulemeter you don't need the voltmeter and a ammeter, plus the extra calculation.

energy transferred = mass of water x specific heat capacity of water x temperature rise

energy transferred = E (J) = m x c x ∆θ = mass of water (kg) x SHCH2O (J/kgoC) x ∆T

rearranging gives: SHCH2O = ∆E / (mass of water x ∆T)

Let the temperature rise a good 10 degrees and repeat the experiment at least twice to get an average - for the most accurate result.

If you have no joulemeter, then, as in the diagram, take measurements from a voltmeter and ammeter.

The use the equation: total energy transferred

Energy (J) = P (W)  x t (s) = I x V x t = current (A) x p.d. (V) x time in seconds

Keywords, phrases and learning objectives for measuring the specific heat capacity of a liquid

Understand how to directly measure the specific heat capacity of a liquid like water or oil. the apparatus method procedure and know how to do the calculation of the specific heat capacity of the liquid under investigation.

WHAT NEXT?

BIG website, using the [SEARCH BOX] below, maybe quicker than navigating the many sub-indexes

for UK KS3 science students aged ~12-14, ~US grades 6-8

ChemistryPhysics for UK GCSE level students aged ~14-16, ~US grades 9-10

for pre-university age ~16-18 ~US grades 11-12, K12 Honors

Use your mobile phone in 'landscape' mode?

SITEMAP Website content © Dr Phil Brown 2000+. All copyrights reserved on Doc Brown's physics revision notes, images, quizzes, worksheets etc. Copying of website material is NOT permitted. Exam revision summaries and references to GCSE science course specifications are unofficial.

Using SEARCH some initial results may be ad links you can ignore - look for docbrown

 @import url(https://www.google.co.uk/cse/api/branding.css); ENTER specific physics words or courses e.g. topic, module, exam board, formula, concept, equation, 'phrase', homework question! anything of physics interest!  This is a very comprehensive Google generated search of my website

TOP OF PAGE