Lithium aluminium hydride can be prepared from the reaction of:
Lithium aluminium hydride can be prepared from the reaction of:
\(LiCl \ and \ Al_2H_6\)
\(LiH \ and \ Al_2Cl_6\)
\(LiCl, Al \ and \ H_2\)
\(LiH \ and \ Al(OH)_3\)
The Correct Option is B
Solution and Explanation
Step 1: Reaction for Preparation of \(\text{LiAlH}_4\)
Lithium aluminium hydride \(\text{LiAlH}_4\) is prepared by the reaction of lithium hydride (\(\text{LiH}\)) with aluminium chloride \(\text{Al}_2\text{Cl}_6\). The reaction is as follows:
\[8\text{LiH} + \text{Al}_2\text{Cl}_6 \rightarrow 2\text{LiAlH}_4 + 6\text{LiCl}.\]
Conclusion: The correct reactants for preparing \(\text{LiAlH}_4\) are \(\text{LiH}\) and \(\text{Al}_2\text{Cl}_6\). Therefore, the correct answer is (2)
Top Questions on Inorganic chemistry
- How do you prepare \(Na_2Cr_2O_7\) from \(Na_2CrO_4\) ?
- CBSE CLASS XII - 2025
- Chemistry
- Inorganic chemistry
- Why do transition elements have high enthalpies of atomisation?
- CBSE CLASS XII - 2025
- Chemistry
- Inorganic chemistry
- What is ‘Misch metal’? Give its one use.
- CBSE CLASS XII - 2025
- Chemistry
- Inorganic chemistry
- Account for the following:
(I)Orange colour of \(\text{Cr}_2\text{O}_7^{2-}\) ion changes to yellow when treated with an alkali.
(II) Zn, Cd and Hg are non-transition elements.
(III) \(E^0\) value for \(\text{Mn}^{3+}/\text{Mn}^{2+}\) couple is highly positive (+1.57 V) as compared to \(\text{Cr}^{3+}/\text{Cr}^{2+}\).- CBSE CLASS XII - 2025
- Chemistry
- Inorganic chemistry
- What happens when:
(I) The manganate ion undergoes disproportionation reaction in acidic medium?
(II) KMnO4 is heated?- CBSE CLASS XII - 2025
- Chemistry
- Inorganic chemistry
Questions Asked in JEE Main exam
- Let \( [x] \) denote the greatest integer function, and let \( m \) and \( n \) respectively be the numbers of the points, where the function \( f(x) = [x] + |x - 2| \), \( -2<x<3 \), is not continuous and not differentiable. Then \( m + n \) is equal to:
- JEE Main - 2025
- Differential Equations
- Let \( f(x) = \frac{x - 5}{x^2 - 3x + 2} \). If the range of \( f(x) \) is \( (-\infty, \alpha) \cup (\beta, \infty) \), then \( \alpha^2 + \beta^2 \) equals to.
- JEE Main - 2025
- Functions
- Let \( P_n = \alpha^n + \beta^n \), \( P_{10} = 123 \), \( P_9 = 76 \), \( P_8 = 47 \), and \( P_1 = 1 \). The quadratic equation whose roots are \( \frac{1}{\alpha} \) and \( \frac{1}{\beta} \) is:
- JEE Main - 2025
- Sequences and Series
- The value of \( (\sin 70^\circ)(\cot 10^\circ \cot 70^\circ - 1) \) is:
- JEE Main - 2025
- Trigonometric Identities
Let $ P_n = \alpha^n + \beta^n $, $ n \in \mathbb{N} $. If $ P_{10} = 123,\ P_9 = 76,\ P_8 = 47 $ and $ P_1 = 1 $, then the quadratic equation having roots $ \alpha $ and $ \frac{1}{\beta} $ is:
- JEE Main - 2025
- Relations and functions