Help with chemistry

Anonymous
timer Asked: Nov 24th, 2018
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Question description

Need help with chemistry.

Quiz review

Question 1

Which of these are properties of acids?

I.They are sour in taste.

II.They turn red litmus paper blue.

III.They dissolve many metals.IV.They feel slippery.

I only

III only

I and II

I and III

II, III, and IV

Question 2

Which of these are properties of bases?

I.They are sour in taste.

II.They turn red litmus paper blue.

III.They dissolve many metals.IV.They feel slippery.

I only

III only

I and II

I and III

II and IV

Question 3

Which of these is the best definition of a Bronsted-Lowry acid?

Any substance that donates H+ ions in solution

Any substance that produces OH− ions in solution

Any substance that accepts a lone pair of electrons

Any substance that neutralizes a base in solution

Any substance that accepts H+ ions in solution

Question 4

Which of these is the Bronsted-Lowry acid in this chemical equation?

H2O + CN− → HCN + OH−

H3O+

H2O

H2SO4

CN−

OH−

Question 5

Which of these compounds cannot act as a Bronsted-Lowry base?

NH4+

OH−

CH3COO−

H2O

NH3

Question 6

The formula of the hydronium ion is _____.

OH−

OH+

H3O+

H3O−

H4O+

Question 7

The formula of the hydroxide ion is _____.

OH−

OH+

H3O+

H3O−

OH2−

Question 8

Which of these substances is a strong acid?

HCN

H2PO3

HCl

HNO2

H2CO3

Question 9

Which of these substances is a weak base?

HCN

CH3COOH

HCl

HCOOH

C5H5N

Question 10

What is the pH of pure water at 25oC?

0

1

10

14

None of these

Question 11

Which of these has the greatest [H3O+]?

pH = 2

pH = 5

pH = 7

pH = 11

pH = 13

Question 12

Which of these statements concerning pH isincorrect?

pH is based on the [H3O+] in solution.

If [H3O+] = 1.0 × 10−13, the solution is basic.

pH = 3 is ten times more acidic than pH = 2.

If pH > 7, the solution is basic.

Pure water has [H3O+] = 1.0 × 10−7.

Question 13

Which of these acids is responsible for the sourness in many fruits?

Muriatic acid

Citric acid

Sulfuric acid

Acetic acid

Benzoic acid

Question 14

Which of these acids is responsible for the tartness of vinegar?

Muriatic acid

Citric acid

Sulfuric acid

Acetic acid

Benzoic acid

Question 15

Which of these acids is found in stomach acid?

Malic acid

Hydrochloric acid

Phosphoric acid

Acetic acid

Lactic acid

Question 16

Which of the following acids are found in most soft drinks?

Acetic and citric acids

Lactic and citric acids

Malic and lactic acids

Carbonic and phosphoric acids

Hydrochloric and phosphoric acids

Question 17

Which of these substances has the highestpH?

CH3COOH

HNO3

NH3

HCOOH

NaOH

Question 18

Which of these pairs represents the products of the dissociation of the following compound in water?

Mg(OH)2 = _____ + _____

MgOH, H2

OH−, MgOH+

Mg2+, 2 OH−

Mg+, 2 OH−

OH2−, Mg+

Question 19

Which of these is the primary ingredient in baking soda?

NaOH

Mg(OH)2

Al(OH)3

CaCO3

NaHCO3

Question 20

Which of these equations best represents the reaction that takes place in the stomach when the antacid calcium carbonate is taken?

NaHCO3 = H2O + CO

CaCO3 = H2O + CO

CO32− + 2H3O+ = 3H2O + CO2

Ca2+ + 2H3O+ = 3H2O + CaO

CaCO3 + H3O+ = Ca(OH)2 + CO2

Question 21

The most acidic rainfall in the United Statesoccurs in _____.

the northwestern region

the southwestern region

the southeastern region

the northeastern region

the central region

Question 22

Which of the following bases is used as a common floor and window cleaner?

Sodium carbonate

Magnesium hydroxide

Calcium carbonate

Ammonia

Baking soda

Question 23

Which of these acids is a component of vinegar?

H2SO4

HCl

HNO3

H3PO4

CH3COOH

Question 24

Which of these substances is a base?

NaHCO3

HCl

HNO3

H3PO4

CH3COOH

Question 25

Which of these substances is an acid?

NaHCO3

NaOH

NH3

KOH

CH3COOH

Homework review

Q1

Write a balanced equation for thedouble-replacement neutralizationreaction described, using the smallest possible integer coefficients.

A reaction occurs when aqueous solutions of potassium hydroxide andnitric acid are combined.

___+___ ----> ___+____

Q2

Write a balanced equation for thedouble-replacement neutralizationreaction described, using the smallest possible integer coefficients.

A reaction occurs when aqueous solutions of potassium hydroxide andhydrosulfuric acid are combined. Assume excess base.

___+___ ----> ___+____

Q3

Write a balanced equation for thedouble-replacement neutralizationreaction described, using the smallest possible integer coefficients.

A reaction occurs when aqueous solutions of calcium hydroxide andhydrochloric acid are combined.

___+___ ----> ___+____

Q4

In the following net ionic equation, identify each reactant as either a Bronsted-Lowry acid or a Bronsted-Lowry base.

HCOOH(aq)+H2O(l)--->HCOO-(aq)+H3O+(aq)

B-L_____acid or base B-L_____acid or base

The formula of the reactant that acts as a proton donor is ____

The formula of the reactant that acts as a proton acceptor is ____

Q5

In the following net ionic equation, identify each reactant as either a Bronsted-Lowry acidor a Bronsted-Lowry base.

NH3(aq)+H2O(l)--->NH4+(aq)+OH-(aq)

B-L_____acid or base B-L_____acid or base

The formula of the reactant that acts as a proton donor is ___

The formula of the reactant that acts as a proton acceptor is ____

Q6 find it in the attachment

Help with chemistry
img_20181125_011018.png

Tutor Answer

Robertmariasi
School: UT Austin

Hello there,Hope everything is fine. As I promised, I am back with the final version of the task. I am ...

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Review

Anonymous
Outstanding Job!!!!

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