(c) Sodium azide is toxic. It can be destroyed by reaction with an acidified solution ofnitrous acid (HNO,) as shown in the equation.2NAN, + 2HNO, + 2HCI* 3N, + 2NO + 2Naci + 2H,0Page 6 of 12A 500 cm' volume of the nitrous acid solution (HNO,) was used to destroycompletely 150 g of the sodium azide.Calculate the concentration, in mol dm, of the nitrous acid used.(i)Nitrous acid decomposes on heating.Balance the following equation for this reaction..HNO, - .HNO,+NO +.H,O(d)Sodium azide has a high melting point.Predict the type of bonding in a crystal of sodium azide.Suggest why its melting point is high.Type of bondingReason for high melting point(e)The azide ion has the formula N,(i)The azide ion can be represented as N =N-NOne of these bonds is a co-ordinate bond.represent the g diagram, draw an arrowhead on one of the bonds tothe Jone pair in the co-ordinate bond.On the followingdirection of donation ofN = N - N-(i)Give the formula of a molecule that has the same number of electrons as thePage 7 of 12azide ion(ii) Which is the correct formula of magnesium azide?Tick () one box.Mg,NMgNMgN.Mg,N. Q4.Some airbags in cars contain sodium azide (NaN3).(a)Sodium azide is made by reacting dinitrogen monoxide gas with sodium amide(NANH2) as shown by the equation.2NANH2 + N20 → NaN3 +NAOHNH3Calculate the mass of sodium amide needed to obtain 550 g of sodium azide,assuming there is a 95.0% yield of sodium azide.Page 5 of 12Give your answer to 3 significant figures.(b) If a car is involved in a serious collision, the sodium azide decomposes to formsodium and nitrogen as shown in the equation.2NAN3(s)2Na(s) +3N2(g)The nitrogen produced then inflates the airbag to a volume of 7.50 x 10-2 m3 at apressure of 150 kPa and temperature of 35 °C.Calculate the minimum mass of sodium azide that must decompose.(The gas constant R = 8.31 J K-1 mol-1)(Hint: find out the number of moles of Nzusing Ideal gas equation, and determine thenumber of moles and mass of NaN3 from the balanced equation)

Amount of any substance = volume × concentration Atoms are combine together to form the molecule…

(c) Sodium azide is toxic. It can be destroyed by reaction with an acidified solution of nitrous acid (HNO,) as shown in the equation. 2NAN, + 2HNO, + 2HCI - 3N, + 2NO + 2Nac + 2H,0 Page 6 of 12 O A 500 cm' volume of the nitrous acid solution (HNO,) was used to destroy completely 150 g of the sodium Calculate the concentration, in mol dm", of the nitrous acid used. (O) Nitrous acid decomposes on heating. Balance the following equation for this reaction. HNO, - HNO, + NO + HO (d) Sodium azide has a high melting point. Predict the type of bonding in a crystal of sodium azide. Suggest why its melting point is high. Type of bonding Reason for high melting point (e) The azide ion has the formula N, O The azide ion can be represented as N =N-N One of these bonds is a co-ordinate bond. On the following diagram, draw an arrowhead on one of the bonds to represent the direction of donation of the lone pair in the co-ordinate bond. N =N - N-

(c) Sodium azide is toxic. It can be destroyed by reaction with an acidified solution of nitrous acid (HNO,) as shown in the equation. 2NAN, + 2HNO, + 2HCI - 3N, + 2NO + 2Nac + 2H,0 Page 6 of 12 O A 500 cm' volume of the nitrous acid solution (HNO,) was used to destroy completely 150 g of the sodium Calculate the concentration, in mol dm", of the nitrous acid used. (O) Nitrous acid decomposes on heating. Balance the following equation for this reaction. HNO, - HNO, + NO + HO (d) Sodium azide has a high melting point. Predict the type of bonding in a crystal of sodium azide. Suggest why its melting point is high. Type of bonding Reason for high melting point (e) The azide ion has the formula N, O The azide ion can be represented as N =N-N One of these bonds is a co-ordinate bond. On the following diagram, draw an arrowhead on one of the bonds to represent the direction of donation of the lone pair in the co-ordinate bond. N =N - N-

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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