Deck 25 (481 - 500) Flashcards
- A bond between nitrogen (Z = 7) and oxygen (Z = 8) is:
a. ionic
b. covalent non-polar
c. metallic
d. covalent polar
covalent non-polar
- Fats do not dissolve in water because:
a. fats and water are both polar
b. fats are polar and water is non polar
c. fats are non polar and water is polar
d. fats and water both non polar
fats are non polar and water is polar
- An unsaturated salt solution is a:
a. heterogenous mixture
b. homogenous mixture
c. physical change
d. compound
homogenous mixture
- What is the correct name of the ion CO32- ?
a. carbonite
b. oxalate
c. bicarbonate
d. carbonate
carbonate
- Plant fats are ——– at room temperature
a. solid
b. liquid
liquid
- Express the following quantity in grams: 159.5 mg
0.1595 g
- Which acid is produced in the stomach?
a. HNO3
b. CH3COOH
c. H2SO4
d. HCl
HCl
- Water solution of Li2CO3 is:
a. acidic
b. basic
c. neutral
d. glacial
basic
- PIC
- When 10ml of 1 mol.dm-3 HCl is added to 10 ml of 1 mol.dm-3 NaOH, the resulting solution is:
a. basic
b. acidic
c. neutral
d. coloured
neutral
- A long chain carboxylic acid is known as a ——–
a. steroid
b. fatty acid
c. triglyceride
d. wax
fatty acid
- Write the balanced equation for the following acid-base reaction:
_H2SO4 + _Ni(OH)3 -> ???
3 H2SO4 + 2 Ni(OH)3 -> Ni2(SO3)3 + 6 H20
- What is the conjugate acid of water?
a. OH-
b. H3O+
c. H2O2
d. HOH
H3O+
- Combination of a fatty acid with a long chain alcohol produces:
a. steroid
b. fatty acid
c. triglyceride
d. wax
wax
- HCl is a strong acid. When it combines with water, the conjugate of HCl will be a:
a. weak base
b. weak acid
c. strong base
d. strong acid
weak base
