Chem test 3 Flashcards


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created 7 years ago by maddytejeda
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End ch 3, ch4, start of ch5
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1

How many moles of K+ are present in 343 mL of a 1.27 solution of K3PO4?

1.31 m

2

Concentration of Chloride Ions in a 0.193m solution of Potassium Chloride is _______.

0.193 m

3

Concentration of Iodide ions in a 0.193 solution of Barium iodide is _________.

0.386 m

4

In a Titration of 35.00 mL of 0.737 m H2So4, _______ mL of a 0.827 m KOH solution is required for neautralization.

62.4

5

Consider the following reactions

AgNo3 ------>

Co(No3) ---->

AgNo3 ---->

Which is the correct order of increasing activity for these metals?

Ag < Co < Zn

6

There are ______ Mol of bromide ions in 0.500 L of a 0.300M solution of AlBr3

0.450 m

7

How many grams of Sodium Chloride are there in 550 mL of a 1.90 m aq solution of sodium CL?

6.11 g

8

The total concentration of ions in a 0.250 M solution of HCL is _______?

0.500 m

9

How many moles of Co 2+ are present in 0.200 L of a 0.400 M solution of Co I2

0.0800

10

A Neautralization reaction between an acid and a metal hydroxide produces

Water and a salt

11

7 Strong Acids

Claire HCl

Brian HBr

invented HI

nutrious HNo3

(3)candy HClO3

(2,4)sold H2So4

(4)profit HClO4

12

8 strong bases

Lily LiOH Lithium Hydroxide

never NaOH Sodium Hydroxide

knew KOH PossasiumHydroxide

Robert RbOH

could ClOH

bake Ba(OH)2

strawberry Sr(OH)2

cake Ca(OH)2

13

What are the spectators ions in the reaction between KOH(aq) and HNO(aq)

HF + OH ---> H2O + F-

14

Combining Aq solution of BaI2 and Na2So4 affords a precipitate of BaSO4

Which Ions is/are spectator ions in the reaction?

Na + and I -

15

The Spectator ions in the react between aq Hydrochloric acid and Aq Ammonia

Are ________

B. Cl - only

16

Spectator ions of aq hydrofluoric acid and aq barium hydroxide are _________

D. Ba 2+ only

17

Spectator ions in reactions

Aq perchloric acid and Aq barium hydroxide are >>>>>>>

ClO 4- and Ba 2+

18

Which ion(s) is/are spectator ions in formation of precip. of

AgCl via combining aq solution CoCl2 and AgNO3

B. Co 2+ and NO 3-

19

How many Grams of CH2OH must be added to water to prepare 150mL of solu. that is 2.0 m Ch3OH

D. 9.6

20

?How many grams of H3Po4 in 175 mL of 3.5 m solution of H3Po4

a. 60

21

How many grams of NoOH (MW = 40.0) are there in 500.0 mL of 0.175 m NaOH solu.

E. 3.50

22

What is the concentration (M) of NaCl solu. prepared dissolving 9.3 g of NaCl in water to give 350 mL of solu?

B. 0.45

23

The molarity (m) of a AQ solution containing 22.5 g of sucrose (C12H22O11) in 35.5 solution is ______

A. 1.85

24

The (M) of aq solution 22.5 glucose (C6H12O6) in 35.5 ml of solution is ________

B. 3.52

25

The (M) solution prepared by diluting 43.72 mL of 1.005 m aq K2CR2)7 to 500 mL is ________

E. 0.0879

26

The (M) of a aq solution containing 52.5 g sucrose (C12H22O11) in 35.5 mL solution is ________

D. 4.32

27

(M) of aq solution containing 75.3g glucose (C6H12O6) in 35.5 mL solution is _______/

A. 11.8

28

Concentration (M) Ch3OH solution prepared dissolving 11.7 g CH3OH in suffient water exact 230 mL solution

A.1.59

29

What concentration (M) of KCI solution made mixing 25.0 mL of 1.00 m KCl with 50.0 mL of 0.100 m KCl

B. 0.100

30

What are the respective concentrations (M) of Na+ and So 2-(4) afford by dissolving 0.500 mil Na2So4 in water and diluting to 1.33 L?

D. 0.752 and 0.376

31

Concentration species 500 mL of 2.104 m solution of sodium sulfate is _______ M sodium ion and _______ m sulfate ion

D. 4.208 and 2.104

32

Con. M of aq methal produced when 0.200 L of a 2.00 M solution was diluted to 0.800 L ______

B. 0.500

33

When 0.500 mol of HC2H3O2 is combined with enough water to make a 300 mL solution, the concentration of HC2H3O1 is _______ M.

E. 1.67

34

31.5 mL aq of H2So4 aq of unknown concentration was titrated with 0.0134 NaOh aq....reach endpoint

C. 0.0051

35

31.5 mL aq HNO3 was titrated with 0.0134 M NaOH aq. Took to endpoint.....

C. 0.0102

36

25.5 mL aliquot HCl unknown concentration 0.113 NaOH, 51.2 mL base ----> endpoint . the concentration of the acid was _________

A. 0.227

37

17.5 ml sample acetic acid (CH3CO2H) solution required 29.6 mL of 0.250m NaOH for neutralization, the concentration was _________ M

C. 0.42

38

When 0.500 mol HC2H3O2 combined with enough water to make 300mL solution the concentration is _______M

E. 1.67

39

When H2So4 is neutralized by NaOh in aq solution, the net ionic equation is _____________

D. H+ (aq) + OH- (aq) ------>> H2O (L)

40

When aq solution of AgNo3 and KI are mixed, AgI precipitates and the balanced net ionic equation is __________

B. Ag+ (aq) + I - (aq) ---> AgI (s)

41

The balanced net equation for precipitation of CaCo3 when aq solution NasCo3 and CaCl2 mix is ___________

E. Ca 2+ (aq) + Co3 (2-) (aq) ------>CaCO3 (s)

42

Calculate Concen. (M) of sodium ions in solution made by diluting 50.0 mL of 0.874 solution of sodium sulfide to total volume 250.0 mL

E. 0.350

43

An (aq) ethanol solu. (400 mL ) was diluted to 4.00L giving a concentration. of 0.0400 m. the concentration. of the original solution. was _______.

D. 0.400 M

44

(M) solution prepared diluted 43.72 mL of 5.005 m aq K2Cr2O7 to 500 mL is _______

A. 0.438

45

Of the following elements, ______ is the most easily oxidized

1. oxygen

2. fluorine

3. Nitrogen

4. Aluminum

5. Gold

B. Aluminum

46

Of the following elements, _____ is the only one who cant be found in nature in natural form

-CU -Ag -Na

-HG -Au

E. Na

47

Based on the equations below, which metal most active?

PB (No3)2 aq + Ni (s) ---> Ni(NO2)2 PB

PB(No3)2 aq + Ag(s) ---> No react.

Cu(No3)2 aq + Ag(s) --> No react.

B. Ni

48

Of the metals below, only ____ will not dissolve in an (aq) solution containing Nickle ions

. Aluminmum - Chromium

Chromium - Barium

Tin Potassium

C. Tin

49

WHen Gold dissolves in aqua regia, what is reduced?

H+ H20

No-3 Au

Cl -

No -3

50

Which of these metals is the LEAST easily oxidized?

-Na -Au -Ag

-Fe -Ca

B. Au

51

Which hydroxides are strong bases?

Sr(Oh)2 KOH

NaOH Ba(OH)2

C. All the above

52

Which of the following are strong acids?

HI HNo3

HF HBr

E. HI, HNO3 , HBR

53

Which of the following are weak electrolytes?

HCl HC2H3O2

NH3 KCl

A. HC2H3O2 and NH3

54

Which of the following are strong electrolytes?

HCI

HC2H3O2

NH3

KCl

A. HCl and KCl

55

A weak electrolyte exists predominantly as a _______ in solution?

E. Molecules

56

A strong electrolyte is one that _________ completely in solution.

A. Ionizes