How to determine the stucture of a compound using H NMR spectroscopy

  1. no. of peaks = no. of H environments2) peak position showing the bond3) peak area - ratio of H's in each environment4) splitting pattern - n+1 rule 5) summary
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Use the following information: [[[[2H2(g) + O2(g) → 2H2O(l) ∆H = −572 kJ mol−1]]]] [[[[2H2(g) + O2(g) → 2H2O(g) ∆H = −484 kJ mol−1]]]] to calculate the enthalpy change for the process: H2O(g) → H2O(l)


Is breaking bonds endothermic or exothermic?


Sodium hydroxide reacts with phosphoric(V) acid according to the equation: 3NaOH + H3PO4 -> Na3PO4 + 3H2O 25.00 cm3 of 0.10 mol dm-3 sodium hydroxide reacts with 0.05 mol dm-3 H3PO4. The volume of H3PO4, in cm3, required for neutralisation is?


I don't understand how to calculate initial rates of reaction based on experimental data