Write the balanced chemical equations for the following reactions.
(a) Calcium hydroxide + Carbon dioxide \(→\) Calcium carbonate + Water
(b) Zinc + Silver nitrate \(→\) Zinc nitrate + Silver
(c) Aluminium + Copper chloride \(→\) Aluminium chloride + Copper
(d) Barium chloride + Potassium sulphate \(→\) Barium sulphate + Potassium chloride
(a) Calcium hydroxide + Carbon dioxide \(→\) Calcium carbonate + Water
(b) Zinc + Silver nitrate \(→\) Zinc nitrate + Silver
(c) Aluminium + Copper chloride \(→\) Aluminium chloride + Copper
(d) Barium chloride + Potassium sulphate \(→\) Barium sulphate + Potassium chloride
Solution and Explanation
(b) Zn + 2AgNO3 \(→\) Zn(NO3)2 + 2Ag
(c) 2AI + 3CuCl2 \(→\) 2AICI3 + 3Cu
(d) BaCl2 + K2SO4 \(→\) BaSO4 + 2KCl
Top Questions on Chemical Equations
Methanol is produced by the reversible, gas-phase hydrogenation of carbon monoxide: \[ {CO} + 2{H}_2 \rightleftharpoons {CH}_3{OH} \] CO and H$_2$ are charged to a reactor, and the reaction proceeds to equilibrium at 453 K and 2 atm. The reaction equilibrium constant, which depends only on the temperature, is 1.68 at the reaction conditions. The mole fraction of H$_2$ in the product is 0.4. Assuming ideal gas behavior, the mole fraction of methanol in the product is ____________ (rounded off to 2 decimal places).
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Choose the option that correctly matches the items in Group 1 with those in Group 2.
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- The product or products formed when sodium carbonate reacts with HCl is/are:
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Which element of the 3d series has the lowest enthalpy of atomisation and why?
- CBSE CLASS XII - 2025
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The residence-time distribution (RTD) function of a reactor (in min−1) is:
\[ E(t) = \begin{cases} 1 - 2t, & \text{if } t \leq 0.5\ \text{min} \\ 0, & \text{if } t > 0.5\ \text{min} \end{cases} \]
The mean residence time of the reactor is _____ min (rounded off to 2 decimal places).
- GATE CH - 2025
- Process Calculations and Thermodynamics
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Questions Asked in CBSE X exam
- PA and PB are tangents drawn to a circle with centre O. If \(\angle AOB = 120^\circ\) and OA = 10 cm, then
(i) Find \(\angle OPA\).
(ii) Find the perimeter of \(\triangle OAP\).
(iii) Find the length of chord AB. - Find 'mean' and 'mode' of the following data : Frequency Distribution Table
Class 0 – 15 15 – 30 30 – 45 45 – 60 60 – 75 75 – 90 Frequency 11 8 15 7 10 9 - CBSE Class X - 2025
- Statistics
From one face of a solid cube of side 14 cm, the largest possible cone is carved out. Find the volume and surface area of the remaining solid.
Use $\pi = \dfrac{22}{7}, \sqrt{5} = 2.2$- CBSE Class X - 2025
- Mensuration
उनके द्वारा मुझे सच्चाई का अहसास कराया गया । (कर्तृवाच्य में बदलिए)
- Name the type of lenses required by the persons for the correction of their defect of vision called presbyopia. Write the structure of the lenses commonly used for the correction of this defect giving reason for such designs.