Stoichiometry Archives - Page 10 of 37 -

The chemical nature of an element is independent of_______________________?

The chemical nature of an element is independent of_______________________?

A. Its atomic number
B. The number of protons or electrons present in it
C. The number of neutrons present in it
D. None of these

The chemical nature of an element is independent of_______________________? Read More »

Stoichiometry

In general, the specific heats of aqueous solutions _____________ with increase in the concentration of the solute?

Stoichiometry / admin

In general, the specific heats of aqueous solutions _____________ with increase in the concentration of the solute?

A. Increase
B. Decrease
C. Remain unchanged
D. None of these

In general, the specific heats of aqueous solutions _____________ with increase in the concentration of the solute? Read More »

Stoichiometry

S.T.P. corresponds to _________________?

Stoichiometry / admin

S.T.P. corresponds to _________________?

A. 1 atm. absolute pressure & 15.5°C
B. 760 mm Hg gauge pressure & 15.5°C
C. 760 torr & 0°C
D. 101.325 kPa gauge pressure & 15.5°C

S.T.P. corresponds to _________________? Read More »

Stoichiometry

The equilibrium data of component A in the two phases B and C are given below. The estimate of Y for X = 4 by fitting a quadratic expression of a form Y = mX2 for the above data is ____________________?

Stoichiometry / admin

The equilibrium data of component A in the two phases B and C are given below. The estimate of Y for X = 4 by fitting a quadratic expression of a form Y = mX2 for the above data is ____________________?

A. 15.5
B. 16
C. 16.5
D. 17

Stoichiometry

If pH value of a solution is 8, then its pOH value will be ____________________?

Stoichiometry / admin

If pH value of a solution is 8, then its pOH value will be ____________________?

A. 6
B. 1
C. 7
D. 10

If pH value of a solution is 8, then its pOH value will be ____________________? Read More »

Stoichiometry

Average molecular weight of air is about ____________________?

Stoichiometry / admin

Average molecular weight of air is about ____________________?

A. 21
B. 29
C. 23
D. 79

Average molecular weight of air is about ____________________? Read More »

Stoichiometry

What fraction of the total pressure is exerted by oxygen, if equal weights of oxygen and methane are mixed in an empty vessel at 25°C ?

Stoichiometry / admin

What fraction of the total pressure is exerted by oxygen, if equal weights of oxygen and methane are mixed in an empty vessel at 25°C ?

A. 2/3
B. 1/3
C. 1/2
D. 1/3 × (298/273)

What fraction of the total pressure is exerted by oxygen, if equal weights of oxygen and methane are mixed in an empty vessel at 25°C ? Read More »

Stoichiometry

An ideal gas can be liquefied, because ___________________?

Stoichiometry / admin

An ideal gas can be liquefied, because ___________________?

A. Its molecular size is very small
B. Its critical temperature is more than 0°C
C. Forces operative between its molecules are negligible
D. It gets solidified directly without becoming liquid

An ideal gas can be liquefied, because ___________________? Read More »

Stoichiometry

Vapor pressure of water at 100°C is about _______________ bar?

Stoichiometry / admin

Vapor pressure of water at 100°C is about _______________ bar?

A. 0.1013
B. 1.013
C. 10.13
D. 101.3

Vapor pressure of water at 100°C is about _______________ bar? Read More »

Stoichiometry

A very dilute solution is prepared by dissolving ‘x1’ mole of solute in ‘x2’ mole of a solvent. The mole fraction of solute is approximately equal to_________________?

Stoichiometry / admin

A very dilute solution is prepared by dissolving ‘x1’ mole of solute in ‘x2’ mole of a solvent. The mole fraction of solute is approximately equal to_________________?

A. x1/x2
B. x2/x1
C. 1 – (x1/x2)
D. 1/x2

A very dilute solution is prepared by dissolving ‘x1’ mole of solute in ‘x2’ mole of a solvent. The mole fraction of solute is approximately equal to_________________? Read More »

Stoichiometry