Advertisements
Advertisements
प्रश्न
Write complete balanced equation for the following reaction:
Calcium (solid) + water (liquid) 
Calcium Hydroxide (solution) + Hydrogen (gas)
Advertisements
उत्तर
Ca (s) + 2H2O (l) → Ca(OH)2 (aq) + H2 (g)
APPEARS IN
संबंधित प्रश्न
Balance the following chemical equation.
\[\ce{BaCl2 + H2SO4 -> BaSO4 + HCl}\]
Balance the given equation:
Mg(OH)2 + HCI MgCI + H2O
Give one example of a chemical reaction characterised by formation of a precipitate.
Is Burning of natural gas an endothermic reaction or an exothermic reaction?
One of the following does not happen during a chemical reaction. This is:
(a) Breaking of old chemical bonds and formation of new chemical bonds
(b) Formation of new substances with entirely different properties
(c) Atoms of one element change into those of another element to form new products.
(d) A rearrangement of atoms takes place to form new products.
Balance the following chemical equation:
Balance the equation stepwise.
SO2(g) + H2S(aq) → S(s) + H2O(l)
Balance the following equation:
Fe + H2O → Fe3O4 + H2
Balance the following equation:
Pb3O4 + HCl → PbCl2 + H2O + Cl2
Give a balanced equation for addition of iron to copper [II] sulphate solution. State the change in colour seen.
In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:
Iron [II] sulphate to sodium hydroxide.
In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:
Copper [II] sulphate to sodium hydroxide.
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Heat energy
Name the following:
A catalyst which increases the rate of a chemical reaction.
Balance the following simple equation:
Fe + H2O ⇌ Fe3O4 + H2
Balance the following simple equation:
NaHCO3 + H2SO4 → Na2SO4 + H2O + CO2
Balance the following simple equation:
Fe2O3 + CO → Fe + CO2
What is a chemical equation?
Which of the following is not a physical change?
Which of the following statements about the given reaction are correct?
`3"Fe"("s") + 4"H"_2"O"("g") -> "Fe"_3"O"_4("s") + 4"H"_2("g")`
- Iron metal is getting oxidised
- Water is getting reduced
- Water is acting as reducing agent
- Water is acting as oxidising agent
