(A) For $XY_2$: $0.1 \ mol$ of $XY_2 = 10 \ g$ $1 \ mol$ of $XY_2 = 100 \ g$ So,$X + 2Y = 100$ (Equation $1$) For $X_3Y_2$: $0.05 \ mol$ of $X_3Y_2 =

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(A) For $XY_2$: $0.1 \ mol$ of $XY_2 = 10 \ g$ $1 \ mol$ of $XY_2 = 100 \ g$ So,$X + 2Y = 100$ (Equation $1$) For $X_3Y_2$: $0.05 \ mol$ of $X_3Y_2 = 9 \ g$ $1 \ mol$ of $X_3Y_2 = 180 \ g$ So,$3X + 2Y = 180$ (Equation $2$) Subtracting Equation $1$ from Equation $2$: $(3X + 2Y) - (X + 2Y) = 180 - 100$ $2X = 80 \implies X = 40$ Substituting $X = 40$ in Equation $1$: $40 + 2Y = 100$ $2Y = 60 \implies Y = 30$ Therefore,the atomic weights of $X$ and $Y$ are $40$ and $30$ respectively.

Class 11 Chemistry Some Basic Concepts of Chemistry Atomic, Molecular and Equivalent masses

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Suppose the elements $X$ and $Y$ combine to form two compounds $XY_2$ and $X_3Y_2.$ When $0.1 \ mol$ of $XY_2$ weighs $10 \ g$ and $0.05 \ mol$ of $X_3Y_2$ weighs $9 \ g,$ the atomic weights of $X$ and $Y$ are

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$40, 30$
B
$60, 40$
C
$20, 30$
D
$30, 20$

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Some Basic Concepts of Chemistry

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Atomic, Molecular and Equivalent masses

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$H_2SeO_4 + NaOH \to NaHSeO_4$; $E.W.$ of $H_2SeO_4 = E_1$
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The ratio of the mass of '$x$' atoms of an element to the mass of '$x$' carbon atoms is $9:1$. Find the molar mass of the element if the molar mass of carbon is $12 \text{ g/mol}$. (in $\text{ g/mol}$)

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Suppose the elements $X$ and $Y$ combine to form two compounds $XY_2$ and $X_3Y_2.$ When $0.1 \ mol$ of $XY_2$ weighs $10 \ g$ and $0.05 \ mol$ of $X_3Y_2$ weighs $9 \ g,$ the atomic weights of $X$ and $Y$ are

Similar Questions

The equivalent weight of a certain trivalent element is $20$. The molecular weight of its oxide is:

The phosphate of a metal $M$ has the formula $M_3(PO_4)_2$. What is the formula for its sulphate?

In order to prepare one litre of a $1 \ N$ (normal) solution of $KMnO_4$,how many grams of $KMnO_4$ are required if the solution is used in an acidic medium for oxidation?

$H_2SeO_4 + NaOH \to NaHSeO_4$; $E.W.$ of $H_2SeO_4 = E_1$$H_2SeO_4 + 2NaOH \to Na_2SeO_4$; $E.W.$ of $H_2SeO_4 = E_2$What is the relation between $E_1$ and $E_2$?

The ratio of the mass of '$x$' atoms of an element to the mass of '$x$' carbon atoms is $9:1$. Find the molar mass of the element if the molar mass of carbon is $12 \text{ g/mol}$. (in $\text{ g/mol}$)

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$H_2SeO_4 + NaOH \to NaHSeO_4$; $E.W.$ of $H_2SeO_4 = E_1$
$H_2SeO_4 + 2NaOH \to Na_2SeO_4$; $E.W.$ of $H_2SeO_4 = E_2$
What is the relation between $E_1$ and $E_2$?