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Grignard Reagents

A sample od d...

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A sample od dolomite contained 45% of CaCO_{}, 40% of MgCO_3 and 15% of clay. Calculate the mass of sulphuric acid of 30% strength requires to react completely with 10g of the sample.

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Q. Clay found in a lake at Bhopal contains 15% by mass moisture along with

C a C O_{3}

and non volatile

S i O_{2}

. This on heating loses a part of its moisture, but

C a C O_{3}

is completely converted into CaO. The partially dried sample now contains 7.3% moisture and 51.5%

S i O_{2}

. What is the mass percentage of

C a C O_{3}

in the original sample of clay approximately?

150 m L

N / 10 H C l

is required to react completely with

1.0 g

of a sample of limestone. Calculate the percentage purity of calcium carbonate.

1.355 g

of pyrolusite sample are added to

50 m L

1 N

oxalic acid solution containing sulphuric acid. After the reaction is completed, the contents are transferred to a measuring flack and the volume made up to

200 m L

20 m L

of this solution is titrated against

K M n O_{4}

solution whose strength is

2 g / L

31.6 m L

K M n O_{4}

solution are required. Calculate the percentage purity in the given sample of pyrolusite.

1

H_{2} O_{2}

solution containing

x %

H_{2} O_{2}

by mass requires x

c m^{3}

K M n O_{4}

solution for complete oxidation under acidic condition. Calculate the normality of

K M n O_{4}

Q. A solution of

0.4 g

H_{2} O_{2}

0.632 g

K M n O_{4}

in the presence of sulphuric acid. Calculate the percentage purity of sample of

H_{2} O_{2}

.

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