Помогите пожалуйста!!!Какой осадок? NaOH+NaCl=... NaOH+Na2CO3=... NaOH+Na2SO4=... NaOH+Na2SO3=... NaOH+Na2S=... NaOH+Na3PO4=... NaOH+NaI=... NaOH+NaBr=... NaOH+CuSO4*5H2O=... NaOH+NaOH=... NaOH+HCl=...