MyQuestionIcon

1

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

Depression in Freezing Point

#8203;if 1 mo...

Question

if 1 mole of pottassium chromate and 1 mole of lead nitrate gives 1 mole of lead chromate and 2 moles of pottassium nitrate, how many grams of lead chromate will beobtained formed using 7g of potassium chromate and 10g of lead nitrate.

Open in App

Solution

$K_{2} C r O_{4} + P b (N O_{3})_{2} \to P b C r O_{4} + 2 K N O_{3} 194 g 331 g 323 g 2 (101) = 202 g 194 g o f p o t a s s i u m c h r o m a t e r e a c t s w i t h 331 g l e a d n i t r a t e S o 7 g o f p o t a s s i u m c h r o m a t e r e a c t s w i t h = \frac{331}{194} \times 7 = 11.94 g o f l e a d n i t r a t e S i n c e t h e a m o u n t o f l e a d n i t r a t e g i v e n i s 10 g, i t a c t s a s a l i m i t i n g r e a g e n t . 331 g o f l e a d n i t r a t e g i v e s 323 g o f l e a d c h r o m a t e 10 g o f l e a d n i t r a t e g i v e s = \frac{323}{331} \times 10 = 9.76 g o f l e a d c h r o m a t e i s f o r m e d$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Write the balanced chemical equation when lead(II) nitrate reacts with potassium chromate.

Q. Assertion :For the confirmation of lead ion we first use iodide solution and then potassium chromate solution. Reason: Lead chromate has specific colour.

Q. Zinc chromate and lead chromate are used as:

Q. Determine the solubilities of silver chromate, barium chromate, ferric hydroxide, lead chloride and mercurous iodide at 298 K from their solubility product constants. Determine also the molarities of individual ions.
The solubility product constants are:
Silver chromate,

1.1 \times 10^{- 12}

Barium chromate,

1.2 \times 10^{- 10}

Ferric hydroxide,

1.0 \times 10^{- 38}

Lead dichloride,

1.6 \times 10^{- 5}

Mercurous iodide,

4.5 \times 10^{- 29}

Q. A very small mass of radioactive isotope of

^{213} P b

was mixed with a non-radioactive lead salt containing 0.01 g of Pb (atomic mass 207). The whole lead was brought into solution and lead chromate was precipitated by addition of a soluble chromate. Evaporation of

10 c m^{3}

of the supernatent liquid gave a residue having a radioactivity

\frac{1}{24000}

of that of the original quantity of

^{213} P b

. Calculate the solubility of lead chromate in mol

d m^{- 3}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Depression in Freezing Point

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Depression in Freezing Point

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon