Advertisements
Advertisements
प्रश्न
When hydrogen is passed over copper oxide, copper and steam are formed. Write a balanced equation for this reaction and state which of the chemicals are products.
Advertisements
उत्तर
The balanced equation for the reaction of hydrogen gas and copper oxide is written as follows:
H2 (g) + CuO (s) → Cu (s) + H2O (g)
Products: Cu and H2O are the products.
APPEARS IN
संबंधित प्रश्न
Balance the given equation:
H2O2 
H2O + O2
Balance the given chemical equation:
NH3 → N2 + H2
When hydrogen is passed over copper oxide, copper and steam are formed. Write a balanced equation for this reaction and state which of the chemicals are elements.
Balance the following equation and add state symbols:
Zn + HCI → ZnCI2 + H2
State one characteristic of the chemical reaction which takes place when lemon juice is added gradually to potassium permanganate solution.
Give one example of an endothermic reaction.
Write word equation for the following skeletal equation:
\[\ce{FeCl2 + Cl2 -> FeCl3}\]
Balance the following chemical equation :
Na2CO3 + HCl → NaCI + H2O + CO2
Write your observation for the following chemical reaction and name the product formed :
When manganese dioxide is added to potassium chlorate and heated.
Balance the following equation. Also name the product formed.
CO2 + C → CO
A student weighed some raisins and recorded the weight as ‘x’. She then soaked the raisins in distilled water. After about 2 hours she removed the raisins, wiped them dry and weighed them again, and recorded that as ‘y’. The percentage of water absorbed by raisins may be determined using the relationship.
Balance the following equation:
MnO2 + HCl → MnCl2 + H2O + Cl2
Balance the following equation:
P + HNO3 → NO2 + H2O + H3PO4
1 g of copper powder was taken in a China dish and heated. What change takes place on heating? When hydrogen gas is passed over this heated substance, a visible change is seen in it. Give the chemical equations of reactions, the name and the color of the products formed in each case.
What is thermit process? Where is this process used? Write a balanced chemical equation for the reaction involved.
Name the following:
A catalyst which increases the rate of a chemical reaction.
Give reason for the following:
Silver salts are kept in dark coloured bottles.
Balance the following simple equation:
H2 + O2 → H2O
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
CaC2 + N2 → 2CaCN2 + C
Write three steps of writing chemical equations with example?
