Advertisements
Advertisements
Question
Give the empirical formula of Glucose C6H12O6 .
Advertisements
Solution
The empirical formula for glucose is CH2O.
APPEARS IN
RELATED QUESTIONS
Write the chemical formula of the Copper nitrate.
State the chemical symbols for the following elements :
Sodium, Potassium, Iron, Copper, Mercury, Silver.
What do the following abbreviations stand for ?
- O
- 2O
- O2
- 3O2
Write down the formulae for the following compounds :
Calcium oxide
Give the formula and valency of:
aluminium ………………. .
Correct the following statement:
Molecular formula of water is H2O2
Correct the following statement:
Formula of iron (lll) oxide is FeO.
Match the following:
| Column A | Column B |
| (a) Pb(NO3)2 | (i) rotten eggs smell |
| (b) CO2 | (ii) burns with a pop sound |
| (c) (NH4)2Cr2O7 | (iii) the suffocating smell of sulphur |
| (d) HCI | (iv) lime water turns milky |
| (e) NO2 | (v) crackling sound |
| (f) O2 | (vi) residue swells up |
| (g) H2 | (vii) brown gas |
| (i) H2S | (viii) supports combustion |
| (j) SO2 | (ix) fumes with NH3 solution |
Name the element in the compound and give the formula of the following compound:
Green vitriol
Write the formula of the following compound:
Potassium aluminate
Write the formula of the following compound:
Potassium nitrite
Write the formula of the following compound:
Potassium bisulphite
Write the formula of the following compound:
Calcium nitrate
Write the formula of the following compound:
Magnesium oxide
Write the formula of the following compound:
Zinc oxide
Write the formula of the following compound:
Aluminium hydroxide
Write the formula of the following compound:
Lead [II] oxide
Write the molecular formulae for the following compounds
Iron (III) sulphide
Give the chemical formulae for the following compounds and compute the ratio by mass of the combining elements in each one of them. (You may use appendix-III).
- Ammonia
- Carbon monoxide
- (Hydrogen chloride
- Aluminium fluoride
- Magnesium sulphide
Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.
