Home
Class 12
CHEMISTRY
A compound has the following composition...

A compound has the following composition by weight , `Na = 18.60 %, S = 25.80 %, H = 4.02 %" and "O = 51.58 %` Assuming that all the hydrogen atoms in the compound are part of water of crystallization, the correct molecular formula of the compound is

A

`Na_(2)S_(2)O_(3).3H_(2)O`

B

`Na_(2)SO_(4).5H_(2)O`

C

`Na_(2)SO_(4).10H_(2)O`

D

`Na_(2)S_(2)O_(3).5H_(2)O`

Text Solution

Verified by Experts

The correct Answer is:
D

`rArr"Formula is "Na_(2)S_(2)O_(3).5H_(2)O`
Promotional Banner

Similar Questions

Explore conceptually related problems

A compound on analysis was found to contain the following composition : Na=14.31%,S=9.97%,O=69.50 %and H=6.22 % Calculate the molecular formula of the compound assuming that the whole of hydrogen in the compound is present as water of crystallisation. Molecular mass of the compound is 322.

If 75.2% of compound is carbon and the rest of the weight is hydrogen, the formula of the compound is

An organic compound has the following percentage composition , C = 48 %, H = 8 %, N = 28 % . Calculate the empirical formula of the compound.

A crystalline compound when heated became anhydrous by losing 51.2 % of the mass. On analysis, the anhydrous compound gave the following percentage composition: Mg = 20.0 %, S = 26.66 % and O = 53.33 %, Calculate the molecular formula of the anhydrous compound and crystalline compound. The molecular mass of anhydrous compound is 120 u.

A hydrocarbon contains 80% carbon. The weight of dm^(3) gas at NTP is 1.35. The molecular formula of the compound is

A compound contains C=40%,O=53.5% , and H=6.5% the empirical formula formula of the compound is:

A compound has 20% of nitrogen by weight. If one molecule of the compound contains two nitrogen atoms, the molecular weight of the compound is

An organic compound contains 49.3 % carbon,6.84 % hydrogen and its vapour density is 73 Molecular formula of the compound is