Home
Class 11
CHEMISTRY
An impure sample of sodium chloride that...

An impure sample of sodium chloride that weighed `0.50 g` gave `0.90 g` of silver choride as precipitate on treatment with excess of silver nitrate solution. Calculate the percentage purity of the sample.

Text Solution

Verified by Experts

The correct Answer is:
B
`NaCl + AgNO_(3) rarr AgCl + NaNO_(3)`
`23 + 35.5 = 58.5 g` `108 + 35.5 = 143.5 g`
`143.5 g of AgCl` is obtained from `58.5 g` of pure `NaCl`
`0.9 g of AgCl` is obtained from `= (58.5 xx 0.9)/(143.5)`
`= 0.36 g` of pure `NaCl`
% purity `= (0.36 xx 100)/(0.5) = 72%`
Promotional Banner

Similar Questions

Explore conceptually related problems

0.15 g of iodoform gave 0.2682 g of AgI. Calculate the percentage of iodine.

0.530 g of an organic compound gave 0.90 g of BaSO_(4) in carius determination of sulphur. Calculate the percentage of sulphur.

1.0 g of metal nitrate gave 0.86 g of metal sulphate. Calculate the equivalent weight of metal.

0.24 g of an organic compound gave 0.287 g of AgCl in the carius method. Calculate the percentage of chlorine in the compound.

The ammonia evolved from 0.21 g of an organic compound by Kjeldahl method neutralised 15 ml of N/20 sulphuric acid solution. Calculate the percentage of nitrogen.

A pure sample of cobalt chloride weighting 1.30 g was found to contains 0.59 g cobalt and 0.71 g chloride on quantitative analysis. What is the percentage composition of cobalt chloride?

0.12 g of an organic compound gave on combustion 0.18 g of water and 0.11 g of CO_(2) . Calculate the percentage of C and H in the organic compound.

The percentage of silver and chlorine in two samples of silver chloride prepared by heating silver foil in the current of chlorine and by the intercation of silver nitrate and hydrochloric acid were found to be identical . This illusrates the law of :

A solution of impure KMnO_4 is prepared by dissolving 2g of it in IL of the solution. 20 ml of this solution required 24.2 ml of N/(20) sodium oxalate solution. The percentage purity of KMnO_4 sample is :

20g of sample containing Ba(OH)_(2) is dissolved in 10 ml of 0.5 M HCl solution. The excess of HCl was then titrated against 0.2 M NaOH. The volume of NaOH used in the titration was 10 ml. Calculate the percentage of Ba(OH)_(2) in the sample. (Mol. wt. of Ba(OH_(2))=171)