Advertisements
Advertisements
प्रश्न
What ions are present in the solutions of following substances? (write the symbols only)
Potassium hydroxide
उत्तर
The ions present in the solutions of the following substances are given below.
Potassium hydroxide, KOH = K+ and OH- ions
APPEARS IN
संबंधित प्रश्न
Metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.
Complete and balance the following chemical equations:
NaOH (aq) HCI (aq)→
Complete and balance the following chemical equations:
CuO (s) + HCI (aq) →
What is a neutralisation reaction?
What ions are present in the solutions of following substances? (write the symbols only)
Sulphuric acid
Hydrochloric acid reacts with a metal X to form a gas Y which burns with a 'pop' sound. Sodium hydroxide solution also reacts with the same metal X (on heating) to form the same gas Y.
Write the chemical equation of the reaction of metal X with (i) hydrochloric acid, and (ii) sodium hydroxide solution.
Is PbO2 a base or not? Comment.
A student added 10 g of calcium carbonate in a rigid container, secured it tightly and started to heat it. After some time, an increase in pressure was observed, the pressure reading was then noted at intervals of 5 mins and plotted against time, in a graph as shown below. During which time interval did maximum decomposition take place?
Acids present in fruits and vegetables are called ______ acids.
A substance 'X' is used as a building material and is insoluble in water. When it reacts with dil. HCl, it produces a gas which turns lime water milky.
- Write the chemical name and formula of 'X'.
- Write chemical equations for the chemical reactions involved in the above statements.