A student tested some solutions with universal indicator paper and wrote down their pH values are:
1,5,7 and 13 but the forgot to write the names of the solutions. Can you help him by matchicng the pHs to the correct solution:

If ph value of solution is less than 7, then what does it indicate?

If ph value of a solution is more than7, then what does it indicate?

You are given three solutions A,B and C. the pH values of the solutions are 4.5, 7.0 and 10.0 respectively? Which of these is acidic?

You are given three solutions A,B and C. the pH values of the solutions are 4.5, 7.0 and 10.0 respectively? Which of these is basic?

A colloidal solution is a type of mixture which consists of particles whose size varies between 1 and 1000 nanometres. In colloidal solution the particles are distributed evenly. During this process the particles do not settle down. This is one of the best know thing about colloidal solutions. Properties of colloids and their variation are a well-known area ever since the primitive age. The best example to prove their familiarity with us is that we know from very early times that coagulation of milk results in the formation of curd. Physical properties of colloids 1. The nature of the colloidal solution is heterogeneous i.e. unlike. These solutions dwell with two different phases : • Dispersed medium Dispersed phase. 2. Despite the fact that colloidal dispersions are unlike in description (nature), yet the dispersed fragments are not detectabJe by the human eye. This is due to the microscopic size of the particles in the solution. 3. The colour of the colloidal dispersion is determined by particles in the solution based on their size. The wavelengths of light that is absorbed will be longer ifthe size of the particle is large. 4. As a result of its size, the colloidal fragments can easily be passed through a traditional filter paper. However, these particles can be filtered by using membranes such as animal, cellophane, and ultrafilters. Give the name of membrane used for filteration ?

Five solutions A, B, C, D and E when teasted with universal indicator showed ph as 4, 1, 11, 7, and 9 respectively, which solution is: neutral? stronly alkaline? stongly acidic? weakly acidic? weakly alkaline?: arrange the ph in increasing order of hydrogen-ion concentration

You are given three solutions A,B and C. the pH values of the solutions are 4.5, 7.0 and 10.0 respectively? minimum concentration of H_3O^(+) ion?

You are given three solutions A,B and C. the pH values of the solutions are 4.5, 7.0 and 10.0 respectively? Which of these has maximum concentration of H_3O^(+) ion.

Solution of a weak acid and its anion (that is,its conjugate base) or of a base and its common cation are buffered. When we add a small amount of acid or base to any one of the, the pH of solution change very little. pH of buffer solution can be computed as for acidic buffer : pH=pK_(a)+ log.(["Conjugate base"])/(["Acid"]) for basic buffer : pOH=pK_(b)+log.(["Conjugate acid"])/([Base]) It is generly accepted that a has useful buffer cpacity (pH change resisting power) provided that the value of [salt or conjugate base] /[acid] for acidic buffer lies within the range of 1 : 10 to 1. Buffer capacity is maximum when [conjugate base] = [acid] Calculater the pH of a solution made by adding 0.01 mole of HCl in 100 mL of a solution which is 0.2 M in NH_(3)(pK_(b)=4.74) and 0.3 M in NH_(4)^(+) : (Assuming no change in volume )