Question:
In the following reactions, the total number of oxygen atoms in X and Y is _______
Na2O + H2O → 2X
Cl2O7 + H2O → 2Y
In the following reactions, the total number of oxygen atoms in X and Y is _______
Na2O + H2O → 2X
Cl2O7 + H2O → 2Y
Na2O + H2O → 2X
Cl2O7 + H2O → 2Y
Show Hint
In reactions involving oxides and water, carefully balance the equations and count the atoms to ensure accuracy in stoichiometry
Updated On: Feb 4, 2026
Hide Solution
Verified By Collegedunia
Correct Answer: 5
Solution and Explanation
The reactions of sodium oxide and dichlorine heptoxide with water are as follows:
\[ Na_2O + H_2O \rightarrow 2NaOH \]
\[ Cl_2O_7 + H_2O \rightarrow 2HClO_4 \]
Adding the coefficients from both equations: 1 +4=5
Was this answer helpful?
1
1
Top Questions on Chemical Reactions
- One mole of Cl$_2$(g) was passed into 2 L of cold 2 M KOH solution. After the reaction, the concentrations of Cl$^-$, ClO$^-$ and OH$^-$ are respectively (assume volume remains constant)
- JEE Main - 2026
- Chemistry
- Chemical Reactions
- What happens when butane is burnt in air? Write the chemical equation for the reaction. Differentiate between the flames obtained when butane and butyne both are burnt in air in similar conditions.
- CBSE Class X - 2025
- Science
- Chemical Reactions
- The colour of the solution observed after about 1 hour of placing iron nails in copper sulphate solution is:
- CBSE Class X - 2025
- Science
- Chemical Reactions
- Define a precipitation reaction. Give its example and also express the reaction that occurs in the form of a balanced chemical equation.
- CBSE Class X - 2025
- Science
- Chemical Reactions
- Example of thermal decomposition reaction are:
- \( \text{2AgCl} \rightarrow \text{2Ag} + \text{Cl}_2 \)
- \( \text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2 \)
- \( \text{2H}_2\text{O} \rightarrow \text{2H}_2 + \text{O}_2 \)
- \( \text{2KClO}_3 \rightarrow \text{2KCl} + \text{3O}_2 \)
- CBSE Class X - 2025
- Science
- Chemical Reactions
View More Questions
Questions Asked in JEE Main exam
The correct order of acidic strength of the major products formed in the given reactions is:
- JEE Main - 2026
- Organic Chemistry
From the following, how many compounds contain at least one secondary alcohol?
- JEE Main - 2026
- Alcohols, Phenols and Ethers
- Let \(729, 81, 9, 1, \ldots\) be a sequence and \(P_n\) denote the product of the first \(n\) terms of this sequence. If \[ 2 \sum_{n=1}^{40} (P_n)^{\frac{1}{n}} = \frac{3^{\alpha} - 1}{3^{\beta}} \] and \(\gcd(\alpha, \beta) = 1\), then \(\alpha + \beta\) is equal to
- JEE Main - 2026
- Sequences and Series
- A plane electromagnetic wave is moving in free space with velocity \[ c=3\times10^{8}\ \text{m/s} \] and its electric field is given as \[ \vec E = 54\sin(kz-\omega t)\,\hat{j}\ \text{V/m}, \] where \(\hat{j}\) is the unit vector along the \(y\)-axis. The magnetic field \(\vec B\) of the wave is:
- JEE Main - 2026
- Magnetism and matter
- Let a point A lie between the parallel lines \(L_1\) and \(L_2\) such that its distances from \(L_1\) and \(L_2\) are 6 and 3 units, respectively. Then the area (in sq. units) of the equilateral triangle ABC, where the points B and C lie on the lines \(L_1\) and \(L_2\), respectively, is:
- JEE Main - 2026
- 3D Geometry
View More Questions