How many of the following combination act as buffer (.1.) HCl + NaOH (.2.) CH3COONa+CH3COOH (.3.) H2SO4+Na2SO4 (.4.) H2CO3+NaOH (.5.) Na2B4O7+H3BO3 (.6.) NH4OH+NH4Cl

Question

How many of the following combination act as buffer (.1.) HCl + NaOH (.2.) CH3COONa+CH3COOH (.3.) H2SO4+Na2SO4 (.4.) H2CO3+NaOH (.5.) Na2B4O7+H3BO3 (.6.) NH4OH+NH4Cl (A) 3 (B) 4 (C) 2 (D) 6

Tardigrade Admin · Accepted Answer

Buffer are (1) CH3COONa+CH3COOH (2) H2CO3+NaOH (3) Na2B4O7+H3BO3 (4) NH4OH+NH4Cl

Q. How many of the following combination act as buffer

$(1)$ HCl + NaOH

$(2)$ $C H_{3} COON a + C H_{3} COO H$

$(3)$ $H_{2} S O_{4} + N a_{2} S O_{4}$

$(4)$ $H_{2} C O_{3} + N a O H$

$(5)$ $N a_{2} B_{4} O_{7} + H_{3} B O_{3}$

$(6)$ $N H_{4} O H + N H_{4} Cl$

3

4

2

6

Buffer are

(1) $C H_{3} COON a + C H_{3} COO H$

(2) $H_{2} C O_{3} + N a O H$

(3) $N a_{2} B_{4} O_{7} + H_{3} B O_{3}$

(4) $N H_{4} O H + N H_{4} Cl$

Q. How many of the following combination act as buffer (1) HCl + NaOH (2) CH3​COONa+CH3​COOH (3) H2​SO4​+Na2​SO4​ (4) H2​CO3​+NaOH (5) Na2​B4​O7​+H3​BO3​ (6) NH4​OH+NH4​Cl

3

4

2

6

Buffer are (1) CH3​COONa+CH3​COOH (2) H2​CO3​+NaOH (3) Na2​B4​O7​+H3​BO3​ (4) NH4​OH+NH4​Cl

Q. How many of the following combination act as buffer

$(1)$ HCl + NaOH

$(2)$ $C H_{3} COON a + C H_{3} COO H$

$(3)$ $H_{2} S O_{4} + N a_{2} S O_{4}$

$(4)$ $H_{2} C O_{3} + N a O H$

$(5)$ $N a_{2} B_{4} O_{7} + H_{3} B O_{3}$

$(6)$ $N H_{4} O H + N H_{4} Cl$

Buffer are

(1) $C H_{3} COON a + C H_{3} COO H$

(2) $H_{2} C O_{3} + N a O H$

(3) $N a_{2} B_{4} O_{7} + H_{3} B O_{3}$

(4) $N H_{4} O H + N H_{4} Cl$