I need a hand with these four please 1) Circle the substance that will be solubl
ID: 575938 • Letter: I
Question
I need a hand with these four please 1) Circle the substance that will be soluble in water: PbSO4, NH.CI, CuBrz, Ba(NO,)2 Na2CrOs, Fe(CIO)s (2) 2) For the following precipitation reactions determine the balanced molecular equation (ME),ionic (IE) and net ionic equations (NIE). (8)+(8) (ME) Al(NO3)3(aq) + Narum) (IE) (NIE) Ca(NO3)2(aq) (ME) LizSO4(aq) CIE) (NIE) + 3) What would be the spectator ion when ammonium phosphate reacts with iron([II) chloride ?-- and when strontium acetate reacts with 4) Determine the balanced molecular and net ionic equations for the following neutralization reactions. (4)+(5 (ME) H3PO4(aq) + NaOH(aq) (NIE) (ME) HCl(aq) + Sr(OH)2(s) NIE)Explanation / Answer
1.
NH4Cl, Ba(NO3)2, Na2CrO4, CuBr2 and Fe(ClO4)3 are soluble in water.
2.
(a)
Molecular equation,
Al(NO3)3 (aq.) + Na3PO4 (aq.) ----------------> AlPO4 (s) + 3 NaNO3 (aq.)
Ionic equation:
Al3+ (aq.) + 3 NO3- (aq.) + 3 Na+ (aq.) + PO43- (aq.) ----> AlPO4 (s) + 3 Na+ (aq.) + 3 NO3- (aq.)
Net Ionic Equation:
Al3+ (aq.) + PO43- (aq.) -----------------> AlPO4 (s)
(b)
ME:
Li2SO4 (aq.) + Ca(NO3)2 (aq.) --------------> CaSO4 (s) + 2 LiNO3 (aq.)
IE:
2 Li+ (aq.) + SO42- (aq.) + Ca2+ (aq.) + 2 NO3- (aq.) -------> CaSO4 (s) + 2 Li+ (aq.) + 2 NO3- (aq.)
NIE :
Ca2+ (aq.) + SO42- (aq.) -------------> CaSO4 (s)
3.
NH4+ and Cl-
CH3COO- and K+
4.
(a)
ME:
H3PO4 (aq.) + 3 NaOH (aq.) -----------> Na3PO4 (aq.) + 3 H2O (l)
IE:
H3PO4 (aq.) + 3 Na+ (aq.) + 3 OH- (aq.) ----------> 3 Na+ (aq.) + PO43- (aq.) + 3 H2O (l)
NIE:
H3PO4 (aq.) + 3 OH- (aq.) ---------------> PO43- (aq.) + 3 H2O (l)
(H3PO4 is weak acid which does not undergoes complete ionisation)
(b)
ME:
2 HCl (aq.) + Sr(OH)2 (aq.) ---------------> SrCl2 (aq.) + 2 H2O (l)
NIE:
2 H+ (aq.) + 2 OH- (aq.) -----------> 2 H2O (l)
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