{"result":{"text":"therefore open square brackets O H to the power of minus close square brackets space f r o m space N a O H space equals 1 over 300 equals 3 cross times 10 to the power of negative 3 end exponent\np O H space equals negative log open square brackets O H to the power of minus close square brackets equals negative log open square brackets 3 cross times 10 to the power of negative 3 end exponent close square brackets\nspace space space space space space space space space equals negative log open square brackets 3 cross times 10 to the power of negative 3 end exponent close square brackets\nspace space space space space space space space space equals open square brackets 0.4771 minus 3 close square brackets space space equals 2.52\np H space equals 14 minus 2.52 equals 11.48\n"},"status":"ok"}