Question

1)Classify each of the following substances as either a strong or weak acid, strong or weak base, or a soluble or insoluble salt.

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BaCl2 HBr KOH NH3 HClO4		strong acid weak acid strong base weak base soluble salt insoluble salt

2)Classify each of the following substances as either a strong or weak acid, strong or weak base, or a soluble or insoluble salt.

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NH3 NaCl HClO KOH H2SO4		strong acid weak acid strong base weak base soluble salt insoluble salt

Answer 1

List of all strong acids are:
HCl, HBr, HI, HNO3, HClO3, HClO4, H2SO4

List of all strong Bases are:
LiOH, NaOH, KOH, RbOH, CsOH, Ca(OH)2, Sr(OH)2, Ba(OH)2, Mg(OH)2

1)
BaCl2: soluble salt
This is salt
Chloride, Bromide and Iodide salts are soluble except for the salt of pb2+, Ag+ and Hg22+
So, BaCl2 is soluble

HBr: strong acid

KOH: strong base
NH3: weak base
HClO4: strong acid

2)
NH3: weak base
NaCl: soluble salt

Salt of alkali metals are soluble
So, NaCl is soluble

HClO: weak acid
KOH: strong base
H2SO4: strong base