AaBbCcD AaBbCcDd AaBbCcDd AaBbCcDd AaBbCcDc Aa Heading 2 Title Subtitle Subtle E

Question

AaBbCcD AaBbCcDd AaBbCcDd AaBbCcDd AaBbCcDc Aa Heading 2 Title Subtitle Subtle Em… Emphasis Intense E., Strong Styles 6. Which of the following is TRUE? A) Strong electrolyte means that the substance is very reactive. B) A strong acid solution consists of only partially ionized acid molecules. C) Weak electrolyte means that the substance is inert. D) A strong base solution consists of only partially ionized acid molecules. E) A weak acid solution consists of mostly nonionized acid molecules. 7. Which of the following compounds is soluble in water? 8. Identify the spectator ions in the following molecular equation A) Agt and Br B) Nat and NO3 C) Nat and Br D) Agt and NOs 9. Identify each of the following compounds are soluble or not in water? ii) NH4Br iv) K2s 10. Determine the oxidation state of each element D P in PO33- iii) S in CaSO: ii) Sa in Sa(SO4)2 iv) N in AgNO: A) precipitation D) combustion B) acid-base C) gas evolution B) oxidation reduction i) HCices.ki0H(ag) H20(1) + LicKaa) ii) Mg(s) + Cu(NO3)2(00)Mg(NO3)2(a4)+ Cu(o) CO2(g) + 2 H2OO). v) CH4(g) + 2 O2(g) ,

Explanation / Answer

6)

The answer is E.

CH3COOH ------------------ CH3COO- + H+

Inthis solution, CH3COOH is weak acid, so the dissocition is very less; so it contains mostly CH3COOH.

7) CaSO4 is soluble in water. The remaining are insoluble in water.

The answer is D

8)

AgNO3(aq) + NaBr(aq) ------------- AgBr(s) + NaNO3(aq)

Ag+(aq) + NO3-(aq) + Na+(aq) + Br-(aq) --------------- AgBr(s) + Na+(aq) + NO3-(aq)

Ag+(aq) + Br-(aq) ------------------- AgBr(s)

hence the spectator ions are Na+ and NO3-.

Spectator ions menas the ions which are present onthe both sides without any change.

The answer is B

9)

Cu(OH)2 is insoluble in water

LiNO3, NH4Br and K2S are soluble in water.

10)

a) PO3-3

oxidation state of O = -2

x+3(-2) = -3

x= +3

the oxidation state of P = +3

b) Sn(SO4)2

the sulfate ion is SO4-2

x+ 2(-2) = 0

x=+4

the oxidation state of Sn = +4

c) CaSO4

oxidation state of Ca= +2

oxidation state of O= -2

+2 + x + 4(-2) = 0

x= +6

the oxidation state of of S= +6

d) AgNO3

oxidation state of of Ag= +1

oxidation state of of O = -2

+1 + x+ 3(-2) = 0

x= +5

oxidation state of of N= +5

11).

i) Acid-base reaction ----------------- B

ii)oxidation -reduction reaction -------- E

iii)gas evolution reaction ---------------- C

iV) precipitation reaction ---------------- A

v) combuston reaction ----------- D.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.