HARD
Earn 100

Alcohol level in blood can be determined by a redox titration with dichromate solution in acidic medium according to the balanced equation
What is blood alcohol level in mass percent if 8.0 mL of 0.05 M solution is required for titration of a 10.0 g sample of blood?
(a)0.092%
(b)0.01%
(c)1.4%
(d)1.2%

60% studentsanswered this correctly
Important Questions on Basic Concepts of Chemistry and Chemical Calculations
MEDIUM
A fuel cell generates electricity by using methanol as fuel and as the oxidant. Calculate the equivalent weight of methanol.

MEDIUM
The number of moles of electron required to reduce mole of to

MEDIUM
acid of molecular mass was neutralise by of . The basicity of the acid is

MEDIUM
Calculate normality of the solution obtained by mixing of and of solutions.

MEDIUM
Complete reaction of 2.0 g of calcium (at wt. = 40) with excess produces gas. Complete reaction of the same quantity of another metal "M" with excess produces gas under identical conditions. The equivalent weight of "M" is closest to:

MEDIUM
of is titrated against solution. The titration is discontinued after adding of solution. The remaining titration is completed by adding solution. What is the volume of solution required for completing the titration ?

MEDIUM
of copper was dissolved in . The copper nitrate thus obtained gave of its oxide on strong heating the equivalent weight of copper is

EASY
The volume (in ) of required to neutralise phosphinic acid is ____________.

EASY
The amount of required to completely reduce 100 mL of 0.25 N iodine solution, is

EASY
The volume of 0.1 M strong dibasic acid sufficient to neutralize 1g of a base that furnishes 0.04 mole of in aqueous solution is :

EASY
reacts with in an acidic medium. The number of moles of oxygen produced per mole of is;

MEDIUM
of is oxidized to . Calculate the equivalent weight of ferrous ion

EASY
of a monobasic acid required solution for complete neutralization. Its molecular weight will be

EASY
How much (molecular weight ) is required to prepare one litre of solution ?

MEDIUM
A solution containing impure reacts completely with of in acid solution. The purity of (in ) is______ (mol. wt. of ; mol. wt. of )

MEDIUM
A solution was made by adding of The normality of the solution is . The value of is _______
(The atomic mass of is )

MEDIUM
The volume, in , of , solution required to react with of ferrous oxalate in acidic medium is (Molar mass of )

MEDIUM
In order to oxidize a mixture of one mole of each of and in acidic medium, the number of moles of is:

MEDIUM
The number of electron required to reduce chromium completely in to in acidic medium, is

HARD
In the reaction of oxalate with permanganate in acidic medium, the number of electrons involved in producing one molecule of is:

