WORKSHEET $($Reactions in aqueous solutions, gases and thermochemistry$)$

$1($a$)$ What is an electrolyte? Please also give some examples on the strong and weak electrolytes, and explain why are they strong and$/$or weak? $($b$)$ Please explain, the dissolution process of sodium chloride $(NaCl)$ in water solution?

$2.$ Characterize the following compounds as soluable or insoluable in water

$($a$)CaC{O}_3,($b$)ZnS{O}_4,($c$)Hg(N{O}_3{)}_2,($d$)HgS{O}_4,($e$)N{H}_4$ClO $($f$)C{a}_3(P{O}_4{)}_2,($g$)Mn(OH{)}_2,($h$)K_{2}S$

$3.$ Please write ionic and net ionic equations fort he following reactions:

$($a$)N{a}_{2}S(aq)+ZnC{l}_2(aq)$

$($b$)K_{3}P{O}_4(aq)+3Sr(N{O}_3{)}_2(aq)$

$($c$)Mg(N{O}_3{)}_2(aq)+2$NaOH$(aq)$

$($d$)AgN{O}_3(aq)+N{a}_{2}S{O}_4(aq)$

$($e$)BaC{l}_2(aq)+ZnS{O}_4(aq)$

$4.$Please describe the Bronsted acid and Bronsted base terms and identify each of the following species as a Bronsted acid, base or both:

$($a$)HI,($b$)C{H}_3\frac{C}{O}O,($c$)H_{2}P{O}_4^{-},($d$)N{H}_4^{+},($e$)P{O}_4^{3-},($f$)HC{O}_3^{-}$

$5.$ For the complete redox reactions given here, write the half reactions and identify the oxidizing and reducing agents:

$($a$)4Fe+3O_{2}2F{e}_2{O}_3$

$($b$)C{l}_2+2$NaBr$2$NaCl$+B{r}_2$

$($c$)Si+2F_{2}Si{F}_4$

$($d$)H_2+C{l}_{2}2HCl$

$6.$ Classify the following redox reactions:

$($a$)2H_2{O}_{2}2H_{2}O+O_2$

$($b$)Mg+2AgN{O}_{3}Mg(N{O}_3{)}_2+2Ag$

$($c$)3HN{O}_{2}HN{O}_3+H_{2}O+2NO$

$($d$)C{l}_2+2KI2KCl+I_2$

$($e$)Mg+2HClMgC{l}_2+H_2$

$($f$)V_2{O}_5+5Ca2V+5$CaO

$7.($a$)$ Describe how to prepare $1\mathrm{.}00L$ of $0\mathrm{.}646MHCl$ solution, starting with a $2\mathrm{.}00MHCl$ solution.

$($b$)$ Water is added to $25\mathrm{.}0mL$ of a $0\mathrm{.}866$MKNO$3$ solution until the volume of the solution is exactly $500mL.$ What is the final concentration of solution?

$($c$)$ A $46\mathrm{.}2mL,0\mathrm{.}568M$ calcium nitrate $Ca(N{O}_3{)}_2$ solution is mixed with $80\mathrm{.}5mL$ of $1\mathrm{.}396M$ calcium nitrate solution. What is the final concentration of solution?

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