Give the net ionic equation for the reaction (if any) that occurs when aqueous s

Question

Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of KBr and Zn(NO;)z are mixed. 9. 13 Which of the following changes will not have any impact on the total pressure of gas in a cylinder? a. The average velocity of the molecules is a. Zn2a) 2Br (aq) >ZnBr2 (s) c. Zn" (aq) +2NO, (ag)+ 2K (aq)+2Br (ea)ZnBr))2NOs (aa) decreased. The temperature of the sample is increased. Half of the molecules are replaced with an equal number of molecules of a gas with a different molar mass. The total number of molecules is doubled. b. dNo reaction occurs C. 10 Which of the lines on the figure below is the best representation of the relationship between the volume of a gas and its absolute temperature, with n and P constant? d. 14. Which of the following compounds is insoluble in water? a. Na PO b. AgNO c. MgC d. Cus 15, What, if any, are the spectator ions when aqueous solutions of HBr and RbOH react? a. Rb' and Br b. H' and OH c. H' and Rb d. There are no spectator ions. Pressure (atm) Temp 11. Which of the following gases effuses most rapidly? a. Carbon monoxide, CO 18.o 6Ammonia, NH, c. Oxygen, 023 d. Hydrogen chloride, HCI 34e u6 12. A compound containing C, H and Cl effuses 0.411 times as fast as neon, Select the correct molecular formula for the compound. b. CH Ch

Explanation / Answer

(10) volume is directily proportional to temperature and at 0K temp. volume is 0.

here unit of temperature is not defined so

if unit of temp. is oC than answer is graph b

and if unit of temp. is K than answer is graph c

(13) if we change velocity, temp or moles, pressure inside cylinder will change

but if we replace half molecules with other gas of different mass than no. of molecules will be same in the cylinder as before and no. of moles will also be same.

so answer is Option C : half of molecules are replaced with an equal no. of different gas with different mol. wt.

(14) Cus is insoluble in water because all other compound are having either strong acid or atrong base

so answer is Option D : CuS

(15) on mixing HBr and RbOH only ions Br- and Rb+ will not change there concentration so spectator ions are

Br- and Rb+ : answer is option A

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