Soal Kimia Dasar Reaksi Kimia Utama dan Gas

A 2,14 L sample of hydrogen chloride (HCl) gas at 2,61 atm and 28 C is completely dissolved in 668 mL of water to form hydrchloric acid solution. Calculate the molarity of the acid solution, assume no change in volume. 

Choose one answer. 

 a . 0,225 M 
 b . 0,338 M 
 c . 0,255 M 
 d . 0,211 M 
 e . 0,318 M 

Correct 

An unknown gas is placed in a 1,500 L bulb at a pressure of 356 mmHg and a temperature of 22,5 C and is found to weigh 0,9847 g. What is the molecular mass of the gas ? 
Choose one answer. 

 a . 38,0 amu 
 b . 34,0 amu 
 c . 83,0 amu 
 d . 32,0 amu 
 e . 36,0 amu 

Correct 

A gas initially at 4,0 L, 1,2 atm ang 66 C undergoes a change so that its final volume and temperature are 1,7 L and 42 C. What is its final pressure? assume the number of moles remains unchanged. 
Choose one answer. 

 a . 2,4 atm 
 b . 4,2 atm 
 c . 2,2 atm 
 d . 2,6 atm 
 e . 6,2 atm 

Correct 

How many grams of KHP are needed to neutralize 18,64 mL of a 0,1004 M NaOH solution ? 
Choose one answer.

 a . 0,3822 g
 b . 0,2823 g 
 c . 0,2822 g 
 d . 0,4822 g 
 e . 0,3833 g 

Correct

What is the total molar concentration of ions in a 0,350 M solution of the strong electrolyte Na2SO4 ,assuming complete dissociation?
Choose one answer.

a . 1,09 M
b . 10,5 M
c . 1,05 M
d . 1,07 M
e . 1,50 M

Correct


Hitunglah molaritas larutan yang dibuat dengan melarutkan 5,0 g glukosa dalam air membentuk 100 mL larutan !
Choose one answer.

a . 0,277 M
b . 0,278 M
c . 0,275 M
d . 0,276 M
e . 0,279 M

Correct

Dibawah ini merupakan asam kuat kecuali ...
Choose one answer.

a . HBr
b . HCl
c . HNO3
d . HF
e . HI

Correct