MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Equivalent Mass

1.85 g sample...

Question

1.85 g sample of an arsenic containing compound pesticide was chemically converted to AsO3- AND TITRATED WITH Pb(AsO4)2. IF 20 ML OF 0.1 M Pb2+ is required to reach the equivalence point ,the mass percentage of arsenic in te pesticide sample is closest to

Open in App

Solution

Suggest Corrections

thumbs-up

5

Similar questions

Q. A 1.85 g sample of an arsenic-containing pesticide was chemically converted to

A s O_{4}^{3 -}

(atomic mass of As = 74.9) and titrated with

P b^{2 +}

P b_{3} (A s O_{4})_{2}

. If 20 mL of 0.1 M

P B^{2 +}

is required to reach the equivalence point, the mass percentages of arsenic in the pesticide sample is closest to

40.0 m L

0.100 M H N O_{3}

is titrated with

0.200 M N a O H

.
Calculate the volume required to reach the equivalence point.

1.5

g sample containing oxalic acid and some inert impurity was dissolved in enough water and volume was made up to

250

20

mL portion of this solution was then mixed with

30

mL of an alkali solution. The resulting solution was then treated with stoichiometric amount of

C a C l_{2}

just needed for precipitation of oxalate as

C a C_{2} O_{4}

solution was filtered off and filtrate was finally titrated against

0.1 M H C l

8.0

mL of acid was required to reach the equivalence point. At last the above neutral solution was treated with excess of

A g N O_{3}

A g C l

obtained was washed, dried and weighed to be

0.4305

g. Determine the mass percentage of oxalic acid in the original sample.

Q. 10.03 g of vinegar was diluted to 100 mL and 25 mL sample was titrated with the 0.0176 M

B a (O H)_{2}

solution. 34.30 mL was required for equivalence. What is the percent of acetic acid in the vinegar?

Q. A mixture containing

K C l

N a C l

was dissolved and total halide was determined by titration with silver nitrate. A sample weighing

0.3250 g

51 m L

0.1 N

solution. Calculate the percentage of each salt in the sample.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Reactions in Solutions

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Equivalent Mass

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon