KCET · Chemistry · Some Basic Concepts of Chemistry
The mass of \(112 \mathrm{~cm}^{3}\) of \(\mathrm{NH}_{3}\) gas at \(\mathrm{STP}\) is
- A \(0.085 \mathrm{~g}\)
- B \(0.850 \mathrm{~g}\)
- C \(8.500 \mathrm{~g}\)
- D \(80.500 \mathrm{~g}\)
Answer & Solution
Correct Answer
(A) \(0.085 \mathrm{~g}\)
Step-by-step Solution
Detailed explanation
\(1 \mathrm{~mol}\) of \(\mathrm{NH}_{3}=17 \mathrm{~g}=22400 \mathrm{~cm}^{3}\) at STP
i.e., \(22400 \mathrm{~cm}^{3}\) of \(\mathrm{NH}_{3}\) at STP have mass \(=17 \mathrm{~g}\)
\(\therefore 112 \mathrm{~cm}^{3}\) of \(\mathrm{NH}_{3}\) at STP will have mass
\(=\frac{17}{22400} \times 112=0.085 \mathrm{~g}\)
i.e., \(22400 \mathrm{~cm}^{3}\) of \(\mathrm{NH}_{3}\) at STP have mass \(=17 \mathrm{~g}\)
\(\therefore 112 \mathrm{~cm}^{3}\) of \(\mathrm{NH}_{3}\) at STP will have mass
\(=\frac{17}{22400} \times 112=0.085 \mathrm{~g}\)
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
- The order of stability of metal oxides isKCET 2009 Easy
- For the reversible reaction, \(A(s)+B(g) \rightleftharpoons\) \(C(g)+D(g), \Delta G^{\circ}=-350 \mathrm{~kJ}\), which one of the following statements is true?KCET 2011 Medium
- Addition of mineral acid to an aqueous solution of Borax, the following compound is formedKCET 2017 Medium
- The rms velocity of molecules of a gas of density \(4 \mathrm{~kg} \mathrm{~m}^{-3}\) and pressure \(1.2 \times 10^{5} \mathrm{Nm}^{-2}\) isKCET 2009 Easy
- Which of the following can be used to test the acidic nature of ethanol?KCET 2019 Hard
- Very pure \( \mathrm{N}_{2} \) can be obtained byKCET 2018 Medium
More PYQs from KCET
- If \(\mathrm{N}_2\) gas is bubbled through water at 293 K , how many moles of \(\mathrm{N}_2\) gas would dissolve in 1 litre of water? Assume that \(\mathrm{N}_2\) exerts a partial pressure of 0.987 bar.
[Given \(\mathrm{K}_{\mathrm{H}}\) for \(\mathrm{N}_2\) at 293 K is 76.48 K bar]KCET 2025 Easy - The sum of the series, \(\frac{1}{2.3} \cdot 2+\frac{2}{3.4} \cdot 2^{2}+\frac{3}{4.5} \cdot 2^{3}+\ldots\) upto \(n\) terms isKCET 2013 Hard
- The method of natural contraception which requires correct knowledge of menstrual cycle isKCET 2019 Easy
- The tangent to the curve \( y=x^{3}+1 \) at \( (1,2) \) makes an angle \( \theta \) with y axis, then the value of \( \tan \theta \) isKCET 2014 Medium
- If \(y=(x-1)^{2}(x-2)^{3}(x-3)^{5}\), then \(\frac{d y}{d x}\) at \(x=4\) is equal toKCET 2021 Medium
- Two circles centred at \((2,3)\) and \((5,6)\) intersect each other. If the radii are equal, the equation of the common chord isKCET 2010 Medium