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Year 12s: what will be the first way you research your future options? >>

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Molar enthalpies

Molar enthalpies

Sherlock Potter

I've worked out H2=23.8 and H3=24.3 I don't know if they should be positive or negative or how to work out H1. Help would be very much appreciated!!
ImageUploadedByStudent Room1426450252.485413.jpg

ImageUploadedByStudent Room1426450252.485413.jpg

Posted from TSR Mobile

Reply 1

Metanoia

How did you work out the numerical values of H2 and H3?

That aside, I would expect the reactions between carbonates and a strong acid to be exothermic, so they are negative values.

To solve for H1, clockwise arrows = anti clockwise arrows

H1 + H3 = H2
H1 = H2 - H3

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