TS EAMCET · Chemistry · Solutions
If \(2 \mathrm{~g}\) of \(\mathrm{NaOH}\) is dissolved to make \(200 \mathrm{ml}\) solution at \(25^{\circ} \mathrm{C}\), the molarity \((\mathrm{M})\) at \(90^{\circ} \mathrm{C}\) is
- A \(\mathrm{M} < 0.25\)
- B \(0.5>M>0.25\)
- C \(\mathrm{M}=0.25\)
- D \(0.5 < \mathrm{M} < 1.0\)
Answer & Solution
Correct Answer
(A) \(\mathrm{M} < 0.25\)
Step-by-step Solution
Detailed explanation
Concentration of the solution at \(20^{\circ} \mathrm{C}\) \[ =\frac{\mathrm{n}}{\mathrm{V}}=\frac{2 / 40}{200 / 1000}=0.25(\mathrm{M}) \quad[\mathrm{Mw} \text { of } \mathrm{NaOH}=40] \] As temp. increases the volume of the solution increases but the no. of moles remains the…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Electrons with a kinetic energy of \(6.023 \times 10^4 \mathrm{~J} / \mathrm{mol}\) are evolved from the surface of a metal, when it is exposed to radiation of wavelength of \(600 \mathrm{~nm}\). The minimum amount of energy required to remove an electron from the metal atom isTS EAMCET 2009 Easy
- The weight of potassium dichromate (molecular weight \(=294\) ) required to prepare \(0.04 \mathrm{~N}\) of \(250 \mathrm{~mL}\) solution isTS EAMCET 2020 Medium
- Match the following.
The correct answer is
(A) (B) (C) (D)TS EAMCET 2009 Easy - The IUPAC name of the following compound is
TS EAMCET 2023 Easy - The number f-electrons in +3 oxidation state of gadolinium \((Z=64)\) is \(x\) and in +2 oxidation state of Ytterbium \((\mathrm{Z}=70)\) is \(\mathrm{y}\). The sum of \(\mathrm{x}\) and \(\mathrm{y}\) isTS EAMCET 2023 Medium
- The degree of dissociation of acid is The value of of isTS EAMCET 2021 Medium
More PYQs from TS EAMCET
- The figure represents vs relation for and gases under identical conditions. Which curve, shown in the figure, represents gas?
TS EAMCET 2021 Easy - Let \(x=\left\{\left[\begin{array}{ll}a & b \ c & d\end{array}\right]: a, b, c, d \in \mathbb{R}\right\}\). If \(f: X \rightarrow \mathbb{R}\) is defined by \(\mathrm{f}(\mathrm{A})=\operatorname{det}(\mathrm{A}) \forall \mathrm{A} \in \mathrm{X}\), then \(\mathrm{f}\) isTS EAMCET 2023 Easy
- If \(0 < p < q\), then \(\lim _{n \rightarrow \infty}\left(q^n+p^n\right)^{1 / n}\) is equal to :TS EAMCET 2006 Medium
- If \(1,2,3\) and \(-1,0,1\) are the direction ratios of the rays \(\mathbf{O A}\) and \(\mathbf{O B}\) respectively, then the direction cosines of a normal to the plane \(A O B\) areTS EAMCET 2021 Medium
- In Ramsden eyepiece, the two planoconvex lenses each of focal length \(f\) are separated by a distance \(12 \mathrm{~cm}\). The equivalent focal length (in \(\mathrm{cm}\) ) of the eyepiece isTS EAMCET 2007 Easy
- If the tangents \(x+y+k=0\) and \(x+a y+b=0\) drawn to the circle \(S \equiv x^2+y^2+2 x-2 y+1=0\) are perpendicular to each other and \(k, b\) are both greater than 1 , then \(b-k=\)TS EAMCET 2024 Easy