WBJEE · Chemistry · Redox Reactions
How much solid oxalic acid (Molecular weight 126 ) has to be weighed to prepare \(100 \mathrm{~mL}\) exactly \(0.1\) (N) oxalic acid solution in water?
- A \(1.26 \mathrm{~g}\)
- B \(0.126 \mathrm{~g}\)
- C \(0.63 \mathrm{~g}\)
- D \(0.063 \mathrm{~g}\)
Answer & Solution
Correct Answer
(C) \(0.63 \mathrm{~g}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{n}_{\mathrm{eq}}=\mathrm{N} \times \mathrm{V}(\mathrm{L})\) \(=(0.1)\left(\frac{100}{1000}\right)=0.01\) weight \(=\) no. of eq \(\left(n_{e q}\right) \times\) Equivalent mass \(=0.01 \times \frac{126}{2}=0.63 \mathrm{~g}\)
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
- Increasing order of the nucleophilic substitution of following compounds is
WBJEE 2025 Medium - For the reaction. \(X_{2} Y_{4}(I) \rightarrow 2 X Y_{2}(g)\) at \(300 \mathrm{K}\), the values of \(\Delta U\) and \(\Delta\) S are \(2 \mathrm{kcal}\) and 20 cal \(\mathrm{K}^{-1}\) respectively. The value of \(\Delta G\) for the reaction isWBJEE 2015 Medium
- The quantity of electricity needed to separately electrolyze 1 M solution of \(\mathrm{ZnSO}_{4}\), \(\mathrm{AlCl}_{3}\) and \(\mathrm{AgNO}_{3}\) completely is in the ratio ofWBJEE 2014 Medium
- An element belongs to Group 15 and third period of the periodic table. Its electonic configuration will beWBJEE 2011 Easy
- Which of the following electronic configuration is not possible?WBJEE 2018 Easy
- Which one of the following corresponds to a photon of highest energy?WBJEE 2017 Hard
More PYQs from WBJEE
- A fighter plane, flying horizontally with a speed \(360 \mathrm{kmph}\) at an altitude of \(500 \mathrm{~m}\) drops a bomb for a target straight ahead of it on the ground. The bomb .should be dropped at what approximate distance ahead of the target ? Assume that acceleration due to gravity \((\mathrm{g})\) is \(10 \mathrm{~ms}^{-2}\). Also neglect air dragWBJEE 2020 Medium
- A point source of light is used in an experiment of photo-electric effects. If the distance between the source and the photo-electric surface is doubled, which of the following may result?WBJEE 2020 Medium
- Let \(f(x)=\int_{\sin x}^{\cos x} e^{-t^2} d t\). Then \(f^{\prime}\left(\frac{\pi}{4}\right)\) equalsWBJEE 2022 Easy
- Let \(S\) be the set of points, whose abscissae and ordinates are natural numbers. Let \(P \in S\), such that the sum of the distance of \(P\) from (8,0) and (0,12) is minimum among all elements in \(S .\) Then, the number of such points \(P\) in \(S\) isWBJEE 2016 Medium
- One mole of a diatomic ideal gas undergoes a process shown in \(\mathrm{P}-\mathrm{V}\) diagram. The total heat given to the gas \((\ln 2=0.7)\) is
WBJEE 2022 Hard - For a chemical reaction, half-life period \(\left(\mathrm{t}_{\frac{1}{2}}\right)\) is 10 minutes. How much reactant will be left after 20 minutes if one starts with 100 moles of reactant and the order of the reaction be (i) zero, (ii) one and (iii) two?WBJEE 2025 Medium