fun chemistry

fun chemistry

University

10 Qs

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fun chemistry

fun chemistry

Assessment

Quiz

Chemistry

University

Practice Problem

Hard

Created by

Endah Ayunda

Used 17+ times

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10 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Menurut teori asam-basa Bronsted-Lowry, asam didefinisikan sebagai zat yang . . . .

Meningkatkan [H+] bila dimasukkan kedalam H2O

Menurunkan [H+] bila dimaasukkan kedalam H2O

Meningkatkan [OH] bila dimasukkan kedalam H2O

. . Menerima 1 H+ dari pasangan reaksinya

Memberi 1 H+ dari pasangan reaksinya

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Larutan yang mempunyai pH lebih besar dari 7 adalah . . . .

Gula

Alkohol

Amoniak

Asam nitrat

Asam klorida

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Derajat keasaman dari larutan 100 ml H2SO4 0,02 M adalah . . . .

2 – log 4

2 + log 4

2 + log 2

12 + log 4

12

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Berapakah konsentrasi ion [OH] dalam larutan jika konsentrasi H+ = 2 X 10-4 M (Diketahui Kw = 10-14)…….

5 X 10-10

5 X 10-18

0,2 X 10-10

0,2 X 10-8

2 X 10-10

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Diantara zat-zat berikut yang memiliki keasaman paling kuat adalah….

HCN (Ka = 6,0 x 10-10)

CH3COOH (Ka = 1,8 x 10-5)

HCl (Ka = 1 x 106 )

NH3 (Ka = 10-33)

H2O (Ka = 1,8 x 10-16)

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Larutan CH3COOH 0,01 M ,Harga Ka = 1,8 x 10-5, nilai kosentrasi ion H+ larutan tersebut adalah……

8 x 10-7

4,2 x 10-4

4,2 x 10-6

2,4 x 10-4

2,4 x 10-6

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Hitunglah pH larutan jika 17,1 gram Ba(OH)2 dilarutkan dalam air sehingga volume larutan menjadi 500 mL. (Ar Ba = 137; O = 16; H = 1)

13,60

16,30

8

9,70

11

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