Download App

Acids, Bases and Salts — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceAcids, Bases and Salts3 Marks
Question
How $H _3 O ^{+}$ion is formed in water solution?
✓

Answer

Hydronium ion is a water molecule with an extra hydrogen ion attached to it. $(\text{H}_2\text{O}+\text{H}^+\rightarrow\text{H}_3\text{O}^+)$ It usually used to determine the acidity of a chemical compound. When a compound is put into water solution, the more the hydronium ion is produced, the higher the acidity is. EX: $\text{HCl(aq)}+\text{H}_2\text{O(l)}\text{Cl}^-+\text{H}_3\text{O}^+$ Hydronium ion is $H _3 O ^{+}$. It is formed by the combination of hydrogen ion $H ^{+}$given by an acid and water molecule..$\text{H}^+\text{H}_2\text{O}\rightarrow\text{H}_3\text{O}^+$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[3 Mark Questions]" from Acids, Bases and Salts→Acids, Bases and Salts — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

What is a magnetic field? How can the direction of magnetic field lines at a place be determined?
→
  1. An object 3cm high is placed 24cm away from a convex lens of focal length 8cm. Find by calculations, the position, height and nature of the image.
  2. If the object is moved to a point only 3 cm away from the lens, what is the new position, height and nature of the image?
  3. Which of the above two cases illustrates the working of a magnifying glass?
→
List any four methods of contraception used by humans. How does their use have direct effect on the health and prosperity of a family?
→
Define reflex action.
→
An object is placed 20cm from (a) a converging lens, and (b) a diverging lens, of focal length 15cm. Calculate the image position and magnification in each case.
→
In which of the following cases more electrical energy is consumed per hour?
  1. A current of 1 ampere passed through a resistance of 300 ohms.
  2. A current of 2 amperes passed through a resistance of 100 ohms.
→
Size of image of an object by a mirror having a focal length of 20cm is observed to be reduced to $\frac{1}{3}\text{rd}$ of its size. At what distance the object has been placed from the mirror? What is the nature of the image and the mirror?
→
Calculate the total cost of running the following electrical devices in the month of September, if the rate of $1$ unit of electricity is $Rs.6.00.$
$i.$ Electric heater of $1000 W$ for $5$ hours daily.
$ii.$ Electric refrigerator of $400 W$ for $10$ hours daily.
→
What is the role of sensory neuron in a reflex arc?
→
List three factors that provide evidences in favour of evolution in organisms and state the role of each in brief.
→