4 gm of NaOH is dissolved in 1000 ml of water. The ion concentration will be:
1. | 10-1 M | 2. | 10-13 M |
3. | 10-4 M | 4. | 10-10 M |
Incorrect statement about pH and H+ is:
1. | pH of neutral water is not zero. |
2. | Adding 1M solution of CH3COOH and 1M solution of NaOH, the pH will be 7. |
3. | H+ of dilute and hot H2SO4 is more than concentrate and cold H2SO4 |
4. | Mixing solution of CH3COOH and HCl, pH will be less than 7 |
If a solution of 0.1 N NH4OH and 0.1 N NH4Cl has pH 9.25, then pKb of NH4OH is:
1. 9.25
2. 4.75
3. 3.75
4. 8.25
What is the correct relationship between the pHs of isomolar solutions of sodium oxide (pH1), sodium sulphide (pH2), sodium selenide (pH3), and sodium telluride (pH4)?
1.
2.
3.
4.
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