Save:
Favorite
Share:
Calculator Allowed: Yes

Question

Answer

Transcription of this question: This question is about compounds of sodium.[2](ii)Describe the structure and bonding in solid sodium oxide.Write equations for the separate reactions of solid sodium oxide and solidphosphorus(V) oxide with excess water and differentiate between the solutionsformed.Sodium oxide, Nap:Phosphorus(V) oxide, Paolo:Differentiation:(b)(c)Sodium peroxide, Na202, is formed by the reaction of sodium oxide with oxygen.2Nap (s) + 02(g) (s)Calculate the percentage yield of sodium peroxide if 5.00g of sodium oxide produces5.50g of sodium peroxide.Sodium peroxide is used in diving apparatus to produce oxygen from carbon dioxide.[2]0)(s) + 2C02(g) 2NazC03(s) + 02(g)Determine the enthalpy change, AH, in kJ, for this reaction using data from thetable and section 12 of the data booklet.Naz02(s)NazC03(s)AHI I kJ mol-l-510.9-1130.7(ii) Outline why bond enthalpy values are not valid in calculations such as that in (c)(i).(d) The reaction of sodium peroxide with excess water produces hydrogen peroxide andone other sodium compound. Suggest the formula of this compound.(e) State the oxidation number of carbon in sodium carbonate, Na2C03.

Leave a Reply