Home
Class 11
CHEMISTRY
Suppose elements X and Y combine to form...

Suppose elements `X` and `Y` combine to form two compounds `XY_(2)` and `X_(3)Y_(2)` when 0.1 mole of former weigh `10 g` while 0.05 mole of the latter weigh `9g`. What are the atomc weights of `X` and `Y`.

A

40,30

B

60,40

C

20,30

D

30,20

Text Solution

Verified by Experts

The correct Answer is:
A
`X + 2Y rarr XY_(2)`
0.1 mol of `XY_(2) = 10 g`
1 mol of `XY_(2) rarr 100 g`
ii. `3X + 2 Y rarr X_(3) Y_(2)`
0.05 mol of `X_(3)Y_(2) = (9)/(0.05) = 180 g`
` {:( :. X + 2 Y = 100),(3X + 2Y = 180):}] {:(MwXY_(2) = 100),(MwX_(2)Y_(3) = 180):}`
Solve of `X` and `Y`
`X = 40 g`
`Y = 30 g`
Promotional Banner

Similar Questions

Explore conceptually related problems

P and Q are two element that form P_(2) Q_(3) and PQ_(2) . If 0.15 mole of P_(2) Q_(3) weighs 15.9g and 0.15 mole of PQ_(2) weighs 9.3 g , what are the atomic weights of P and Q ?

Element X and Y form two different compounds. In the first compound, 0.324 g X is combined with 0.471 g Y . In the second compound, 0.117 g X is combined with 0.509 g Y . Show that these data illusttate the law of multiple proportions.

A compound X has molecular formula C_3H_4 One mole of X reacts with 2 moles of hydrogen to yield a compound Y. Deduce the structure of X and Y

Elements A and B combine to form three different compounds: 0.3 g of A + 0.4 g of B rarr 0.7 g of compound X 18.0 g of A + 48.0 g of B rarr 66.0 g of compound Y 40.0 g of A + 159.99 g of B rarr 199.99 g of compound Z Show that the law of multiple proportions is illustrated by the data given above.

Two elements X (atomic weight = 75) and Y (atomic weight = 16) combine to give a compound having 75.8% of X. The compound is :

0.30g of an organic compound containing C , H and Oxygen on combustion yields 0.44g CO_(2) and 0.18g H_(2)O . If one mole of compound weighs 60 , then molecular formula of the compound is

A compound formed by element X and Y crystallizes in the cubic structure when Y atoms are at the corners of the cube and X atoms are at the alternate faces. What is the formula of the compound?

Two elements X and Y have atomic masses 14 and 16 respectively. They can form a series of five compounds A, B, C, D and E in which for the same amount of X, Y is present in the ratio of 1:2:3:4:5. If the compound A has 28 parts by weight of X and 16 parts by weight of Y, then compound C will have 24 parts by weight of Y combined with

Find X and Y if, X+Y=[(5,2),(0,9)] and X-Y=[(3,6),(0,-1)] .

Let x and y be two variables such that x gt 0 and xy =1. Then the minimum value of x+y is