please help with these questions

Question # 00703459 Posted By: sheady Updated on: 07/01/2018 06:28 PM Due on: 07/01/2018
Subject Chemistry Topic Biochemistry Tutorials:
Question
Dot Image

a

Write the neutralization reaction that occurs between H2S and NaOH.

HTML EditorKeyboard Shortcuts

12pt

Paragraph

0 words

Flag this Question

Question 33 pts

Write the half reactions for the following equation. Please identify which half reaction is oxidized and which is reduced.

Ni + ZnCl2 --> NiCl3 + Zn

HTML EditorKeyboard Shortcuts

12pt

Paragraph

0 words

Flag this Question

Question 43 pts

What substances are produced when an acid reacts with a base?

a salt and hydrogen gas

carbon dioxide and water

a sugar and water

a salt and water

Flag this Question

Question 53 pts

A substance which can act as both an acid and a base in different reactions is said to be _____.

catalytic

amphoteric

diprotic

bipolar

Flag this Question

Question 63 pts

What is NOT an Arrhenius acid?

HF

HCOOH

CH4

HNO3

Flag this Question

Question 73 pts

In the reaction below state what is being oxidized and what is being reduced.

4 Mn + 3 O 2 ? 2 Mn 2 O 3

HTML EditorKeyboard Shortcuts

12pt

Paragraph

0 words

Flag this Question

Question 83 pts

Write the half reactions for the following equation. Please identify which half reaction is oxidized and which is reduced.

Na + Cl2 ? NaCl

HTML EditorKeyboard Shortcuts

12pt

Paragraph

0 words

Flag this Question

Question 93 pts

Write the half reactions for the following equation. Please identify which half reaction is oxidized and which is reduced.

Ca + N2 ? Ca3 N2

HTML EditorKeyboard Shortcuts

12pt

Paragraph

0 words

Flag this Question

Question 103 pts

Which is the expression for the ion-product of water?

Question 113 pts

Which of the following is polyprotic?

H3PO3

H2CO3 and H3PO3

CH3COOH

H2CO3

HClO4

Flag this Question

Question 123 pts

Write the half reactions for the following equation. Please identify which half reaction is oxidized and which is reduced.

N2 + Br2 ? NBr3

HTML EditorKeyboard Shortcuts

12pt

Paragraph

0 words

Flag this Question

Question 133 pts

What is the pH of a neutral solution?

14

7

0

1

Flag this Question

Question 143 pts

Calculate the pH of a solution that has a [OH?] of 2.6 × 10?6 M.

6.51

7.71

8.41

6.29

Flag this Question

Question 153 pts

In the presence of a base, the color of litmus is _____, while the color of phenolphthalein is _____.

red; pink

red; blue

blue; pink

blue; colorless

Flag this Question

Question 163 pts

Write the half reactions for the following equation. Please identify which half reaction is oxidized and which is reduced.

Mn3+ + ClO3- ? MnO42- + Cl-

HTML EditorKeyboard Shortcuts

12pt

Paragraph

0 words

Flag this Question

Question 173 pts

Solutions that are basic are also called _____ solutions.

saturated

hydroxic

alkaline

acidifying

Flag this Question

Question 183 pts

What is the molarity of HCl found in a titration where 15 ml of HCl is titrated with 10 ml of 1 M NaOH?

HTML EditorKeyboard Shortcuts

12pt

Paragraph

0 words

Flag this Question

Question 193 pts

An acid which ionizes completely in water is a _____.

strong electrolyte

nonelectrolyte

base

weak electrolyte

Flag this Question

Question 203 pts

Which is NOT an Arrhenius base?

Ca(OH)2

KOH

CH3OH

CsOH

Flag this Question

Question 213 pts

A solution with a pOH of 12.0 is _____.

acidic

basic

neutral

Flag this Question

Question 223 pts

Substances which change color in the presence of acids or bases are called _____.

catalyst

salts

indicators

alcohols

Flag this Question

Question 233 pts

Bases tend to taste _____.

sweet

salty

bitter

sour

Flag this Question

Question 243 pts

A base which does not ionize completely in water is a _____.

weak electrolyte

strong electrolyte

nonelectrolyte

No bases ionize completely in water

Flag this Question

Question 253 pts

Which statement correctly describes the concentration of hydrogen ion and hydroxide ion in pure water at 25°C?

The concentration of hydrogen ion and hydroxide ion is 10?7 M.

There is no hydrogen ion or hydroxide ion in pure water.

The concentration of hydrogen ion and hydroxide ion is both 1.0 M.

The concentration of hydrogen ion and hydroxide ion is 10?14 M.

Flag this Question

Question 263 pts

How many ionizable hydrogen atoms are present in the CH3COOH molecule?

4

3

1

2

Flag this Question

Question 273 pts

What common household item contains a base?

baking powder

vinegar

lemon juice

tomato sauce

Flag this Question

Question 283 pts

The value of Kw at 25°C is _____.

1. 1.0 × 1014

1.0 × 10?7

1.0 × 10?14

1.0 × 107

Flag this Question

Question 293 pts

Write the half reactions for the following equation. Please identify which half reaction is oxidized and which is reduced.

CO + Cu2O3 ? Cu + CO2

HTML EditorKeyboard Shortcuts

12pt

Paragraph

0 words

Flag this Question

Question 303 pts

Write the half reactions for the following equation. Please identify which half reaction is oxidized and which is reduced.

Cu + AgNO3 --> Cu(NO3)2 + Ag

HTML EditorKeyboard Shortcuts

12pt

Paragraph

0 words

Flag this Question

Question 313 pts

What is the pH of a solution that has a [H+] of 1.5 × 10?5 M?

7.31

4.82

3.17

6.70

Flag this Question

Question 323 pts

Which expresses the relationship of pH to pOH?

pH + pOH = 14

pH - pOH = 7

pH + pOH =-14

pH x pOH =7

Flag this Question

Question 333 pts

Calculate the hydrogen ion concentration in a 3.4 × 10?3 M solution of KOH.

3.4 x 10-3

6.6 x 10-11

2.94 x 10-12

3.4 x 1011


Dot Image
Tutorials for this Question
  1. Tutorial # 00703303 Posted By: neil2103 Posted on: 07/01/2018 06:43 PM
    Puchased By: 3
    Tutorial Preview
    The solution of chemistry test done...
    Attachments
    chem_test_12_done.docx (130.27 KB)
    Recent Feedback
    Rated By Feedback Comments Rated On
    s...dy Rating Tutorials are written after research 08/01/2018

Great! We have found the solution of this question!

Whatsapp Lisa